Little Snitch Windows Archives

  1. Little Snitch Windows Archives Full
  2. Little Snitch Windows Alternative

Little Snitch 3.8.2

Little Snitch controls network traffic by registering kernel extensions through the standard application programming interface (API) provided by Apple. If an application or process attempts to establish a network connection, Little Snitch prevents the connection. Apr 01, 2020 Also, get the Total Network Inventory for free. Little Snitch for Mac can be tried out for free for 30 days. After that, $29.95 buys the full version with no restrictions. While it does include a native installer, loading the program proved. Aug 08, 2020 For those of you that don't know what Little Snitch is, it's a Mac program that detects outbound connections and lets you set up rules to block connections.Helpful resources.General rules. Ok, read the docs for Netlimiter. Keep it civil and on topic. Little snitch network monitor windows.

Runs on macOS 10.10+

Little Snitch 3.8 Free Download Latest Version for MAC OS. It is full offline installer standalone setup of Little Snitch 3.8 crack serial key for macOS. Little Snitch 3.8 Overview Little Snitch protects your privacy! As soon as you’re connected to the Internet, applications can potentially send whatever information they want. If you are new to Little Snitch, you may get overwhelmed by the vast amount of notifications from applications wanting to connect to the Internet. The all-new Silent Mode was re-built from the ground up to make dealing with them a breeze. It lets you silence all notifications for a while, and make all your decisions later. Home Software Little Snitch 4. In the same way, It has the More exceptional network monitoring device that appears after your incoming and outgoing little snitch alternative for mac connection. Furthermore, nice as it gives you an alarming message every time there is each person of your apps or software tries to connect to the Read more. Little Snitch 3.8.1 (4738) Due to a bug in macOS, applications may hang for a while when they attempt to show animated graphics. Little Snitch detects when important components stop responding and used to generate diagnostics info.

Without a license key, Little Snitch runs in demo mode, which provides the same protection and functionality as the full version. The demo runs for three hours, and it can be restarted as often as you like. The Network Monitor expires after 30 days. Turn it into a full version by entering a license key.

Little Snitch 3.8.2 (4740)

  • Fixed an incompatibility of previous Little Snitch version 3.8.1 with OS X 10.10 Yosemite.

Little Snitch 3.8.1 (4738)

  • Due to a bug in macOS, applications may hang for a while when they attempt to show animated graphics. Little Snitch detects when important components stop responding and used to generate diagnostics info. Since this further slowed down the machine, we no longer generate these diagnostics and simply restart the affected component.
  • Fixed outdated message in installer log on newer macOS versions when boot cache update failed due to a full Recovery HD.
  • Improved protection against malware attempting to modify Little Snitch.

Network Monitor

  • Fixed a hang of several seconds when stopping the traffic dump.

Little Snitch 3.7.4 (4728)

  • Fixed a possible local exploit allowing privilege escalation in Little Snitch Installer. Credit to Patrick Wardle (Synack, Inc.) for discovering this issue.
  • Little Snitch Configuration no longer shows iOS Simulator apps in the GUI Applications section.
  • Fixed a crash of Little Snitch Configuration when editing multiple temporary rules.
  • Improved VPN detection.

Little Snitch 3.7.3 (4726)

  • Fixed a rare kernel panic that could happen when a process terminated while a Connection Alert for an incoming TCP connection for that process was shown.
  • Fixed an incorrect notification about “Simulated Input from Little Snitch Agent”.

Little Snitch 3.7.2 (4724)

  • Improved protection against simulated key strokes and mouse clicks.
  • Other stability improvements and bug fixes.

Little Snitch 3.7.1 (4722)

  • Further improved compatibility with macOS 10.12 Sierra.
  • Fixed a crashing issue in the Known Networks window of Little Snitch Configuration.
  • When a connection attempt is allowed or denied automatically (according to Preferences > Alert > Confirm connection alert automatically) a user notification is now shown. This allows you to review those automatically handled attempts later in Notification Center. By default, these notifications disappear after a few seconds. If you want them to stay on screen, open System Preferences > Notifications and change the alert style for Little Snitch Agent from “Banners” to “Alerts”.
  • Fixed an incompatibility with VirtualBox that could result in a kernel panic.
  • Improved factory rules.

Little Snitch 3.7 (4718)

  • Added compatibility with macOS 10.12 Sierra.
  • Further improved Fast User Switching support.

Little Snitch 3.6.4 (4370)

This version fixes critical security issues.
It’s therefore strongly recommended to update as soon as possible.

  • Fixed a critical bug that makes it possible for potential attackers to circumvent the Little Snitch network filter. Credit to @osxreverser for discovering this issue.
  • Added IKEv2 VPN support to Automatic Profile Switching detection.
  • Fixed: Under rare circumstances Fast User Switching caused all connections without rules to be silently denied without showing a connection alert.
  • Fixed an issue causing connection alerts triggered by an “ask” rule to sometimes produce rules with “Until Quit” instead of “Once” lifetime.
  • Fixed a rare crash when searching for rules or suggestions in Little Snitch Configuration.
  • Other bugfixes and improvements.

Little Snitch 3.6.3 (4362)

  • Fixed a bug causing Little Snitch Uninstaller to crash.

Little Snitch 3.6.2 (4360)

This version fixes critical security issues.
It’s therefore strongly recommended to update as soon as possible.

  • Fixed a critical security vulnerability that makes it possible for malicious software to run arbitrary code at the kernel level. Credit to Patrick Wardle (Synack, Inc.) for discovering this issue.
  • Fixed an incompatibility of the Little Snitch Installer with some older OS X versions.
  • Fixed a memory leak in Little Snitch Configuration.
  • Fixed a crash in Little Snitch Configuration that could occur when creating a Diagnostics Report.
  • Fixed an issue that could cause the Connection Alert to become unresponsive to user interaction.
  • Improved Installer to reliably terminate Little Snitch Configuration during installation.
  • Fixed an issue when turning off Silent Mode causing connection alerts for terminated processes to appear.

Little Snitch 3.6.1 (4356)

  • Fixed a bug which caused a kernel panic on some OS X El Capitan installations.
  • Fixed a bug related to iOS Simulator apps where tvOS apps in the simulator would not show connection alerts and would lead to a crash in Little Snitch Configuration and Network Monitor.
  • Fixed a bug which caused Until Quit rules to remain active after quitting the related application.

Little Snitch 3.6 (4352)

  • Little Snitch 3.6 is ready for OS X El Capitan.
  • Added support for watchOS and tvOS simulator apps.
  • Other improvements and bugfixes.

Little Snitch 3.5.3 (4246)

  • Significantly reduced CPU load of Little Snitch menu bar item.
  • Improved searching for denied connections in Network Monitor.
  • Improved compatibility with OS X 10.10.4.
  • Fixed: Menu bar item sometimes got stuck in highlight mode.
  • Fixed: Editing of multiple rule selections didn’t work in certain cases.
  • Other stability improvements and bug fixes.

Little Snitch 3.5.2 (4240)

  • Refined some icons to better match the look of OS X Yosemite.
  • When using OS X Mavericks (10.9) or later, Little Snitch Agent, Network Monitor, and Configuration should not cause the discrete GPU (“High Performance GPU”) to be activated anymore, especially on Mid 2010 MacBook Pro.
  • Fixed: In Little Snitch Configuration, when pressing ⌫ while no rule was selected, the last rule was selected.
  • Fixed spontaneous horizontal scrolling of text in the Connection Inspector window of Network Monitor.
  • Fixed: Closing the Connection Inspector window did not preserve its position on screen.

Little Snitch 3.5.1 (4234)

Download little snitch for windows
  • Refined appearance in configuration UI to better match the look of OS X Yosemite.
  • Improved user experience when a connection attempt was automatically confirmed after a timeout.
  • Fixed an issue causing a first time installation of Little Snitch to hang under rare circumstances when attempting to restart the computer.
  • Fixed a bug introduced in Little Snitch 3.5 causing “Until Quit” rules to remain enabled after the process quit.
  • Fixed an issue in Network Monitor causing the destination of a connection to be wrongly shown as '0 Servers'.
  • Improved compatibility with Xcode Server.

Little Snitch 3.5 (4228)

  • Greatly improved support for iOS Simulator apps in Connection Alerts, Network Monitor and Configuration. Read our blog post for details on how iOS Simulator apps are now handled in Little Snitch.
  • Added support for showing iOS App Extension icons.
  • Improved handling of via connections:
    • Connection alerts now show a cancel button if either the parent or the via process is terminated.
    • Until Quit rules are now valid until both the parent process and via process have terminated.
  • OS X Yosemite changed how incoming ssh connections are handled. Incoming connections are no longer handled by sshd directly but instead by launchd. On OS X Yosemite, this version of Little Snitch automatically converts existing rules to ensure incoming SSH connections work as expected.
  • Little Snitch menu bar item no longer occupies space when disabled.
  • Fixed: The process owner in Network Monitor Snapshots was “root” instead of the actual user in many cases. Snapshots now store the user’s names and show them correctly.
  • Software update checks are now using HTTPS. We will gradually enable HTTPS for all other connections to our servers in the near future.

Little Snitch 3.4.2 (4216)

  • Fixed: Connection alert occasionally no longer appears after using the Research Assistant.
  • Updating Little Snitch prior to upgrading to OS X Yosemite is recommended.

Little Snitch 3.4.1 (4214)

  • Fixed an issue where the connection alert wasn’t responsive during OS X updates. Updating Little Snitch prior to updating to OS X Yosemite is recommended.
  • Improved “Repair Path” functionality and added a “Repair” button when showing “Invalid Rules” suggestions.
  • Improved Automatic Profile Switching by adding support for latest versions of OpenVPN.

Little Snitch 3.4 (4212)

  • Added support for OS X Yosemite.
  • Improved support for server processes (like AppleFileServer, httpd, smbd, and more).
  • Improved detection and handling of OpenVPN connections.
  • Improved handling of terminated processes in connection alerts.
  • Improved display of TCP connection states in Network Monitor.
  • Improved detection of corresponding rules in Network Monitor.
  • Improved indication of incoming and outgoing connections in Network Monitor.
  • New search scope for incoming and outgoing connections in Network Monitor.
  • Fixed rare installer crash caused by wrong file system permissions.
  • Fixed a rare kernel panic.
  • Minor bugfixes and improvements.

Little Snitch 3.3.4 (4098)

Little Snitch 3.3.3 (4096)

  • Improved OpenVPN support.
  • Improved AFP and SMB support.
  • Fixed: Network Monitor now displays correct TCP connection state.
  • Minor bug fixes and improvements.

Little Snitch 3.3.2 (4094)

  • Fixed rare installer crash caused by wrong file system permissions.
  • Fixed a bug causing Little Snitch Configuration to crash on Mac OS X 10.6 and Mac OS X 10.7.

Little Snitch 3.3.1 (4092)

  • Improved dealing with large amount of silent mode suggestions.
  • Improved Little Snitch Configuration sidebar: Added explanatory texts.
  • Little Snitch Network Monitor Inspector performance improvements.
  • Little Snitch Network Monitor respects “Reopen windows when logging back in” option now.
  • Improved handling of certain VPN connections.
  • Improved window positioning of Little Snitch Monitor.
  • Improved validation of profile names.
  • Improved iOS Simulator support.
  • Host- and domain rules now have priority over local network rules.
  • Installer detects Little Snitch Configuration in locations other than /Application and performs update accordingly.
  • Fixed VPN related kernel panic.
  • Fixed Little Snitch Installer bug.
  • Fixed issues causing Little Snitch Network Monitor not to appear in multiple screen environments.
  • Fixed an issue causing Little Snitch Network Monitor to disappear when dragged on another screen on OS X 10.9.
  • Fixed an issue where Little Snitch Agent appeared to have crashed.
  • Fixed an OS X 10.6 related drawing bug in Little Snitch Configuration sidebar.
  • Minor bugfixes and improvements.

Little Snitch 3.3 (4050)

  • Little Snitch is now compatible with OS X Mavericks.
  • Added a welcome window to Little Snitch Configuration to help you get started (shown automatically after updating).
  • Instead of some alerts, notifications are shown in notification center.
  • The Network Monitor window can now be dragged to a screen that lies above a screen with a menu bar.
  • Improved filtering behavior during system startup.
  • Improved Profile Switching Alert behavior.
  • Improved Network Monitor window positioning on multiple display setups.
  • Fixed an issue causing Little Snitch to display IP addresses instead of the actual hostnames.
  • Fixed an issue where a Network Monitor document couldn’t be saved from the closing dialog.
  • Fixed a rare hang in conjunction with certain screen savers.
  • Copy/paste of rules now preserves process-owner attribute.
  • Other bugfixes and improvements.

Little Snitch 3.1.1 (3932)

  • Improved default selection of hostname in connection alerts.
  • Fixed an issue which caused the connection alert to display IP addresses instead of hostnames with certain VPN configurations.
  • Minor other bugfixes and improvements.

Little Snitch 3.1 (3926)

  • Automatic Profile Switching

    This new feature allows you to assign networks (for example your Wi-Fi network at home, a public hotspot, etc.) to certain profiles. Whenever you join one of these networks, Little Snitch detects the network change and switches to the associated profile automatically.

    When you join a network for the first time, Little Snitch shows an alert window allowing you to choose the desired profile. Alternatively you can configure a default profile that will be used for all unknown networks.

    The mappings between profiles and networks can be reviewed and edited later in Little Snitch Configuration, either in the profiles section of the sidebar, or in the new “Known Networks” window (⇧⌘K).

    Automatic Profile Switching is off by default. To use it, it must be enabled in Little Snitch Configuration > Preferences > Automatic Profile Switching.

  • In the menu bar item “Silent Mode” and “Start/Stop Network Filter” entries are now hidden if “Allow Preferences Editing” is disabled.
  • Improved “Restore Factory Defaults” feature.
  • Updated help section to reflect changes mentioned above.
  • Fixed a bug which caused a kernel panic in some rare cases.
  • Minor other bugfixes and improvements.

Little Snitch 3.0.4 (3916)

  • Improved detection of invalid domain names.
  • Improved IP Address range detection.
  • Improved Ruleset Analyzer.
  • Improved search filter behavior in Little Snitch Configuration.
  • Reduced CPU load in Silent Mode.
  • Performance improvements of kernel extension.
  • Fixed: Restoring of factory rules on restart.

Little Snitch 3.0.3 (3908)

  • Added rule backup functionality (Rules > Backup…)
  • Import of unsuitable backup files is no longer possible.
  • Installer now repairs filesystem permissions if necessary.
  • Pressing cancel in the connection alert window now cancels all connection attempts for terminated processes.
  • Improved alert timeout behavior.
  • Improved handling of DashboardClient application.
  • Improved detection of Unix executables.
  • Fixed an issue which caused an “Internal communication error” message.
  • Fixed an issue where preference settings were non-persistent.
  • Fixed an issue which caused missing traffic indication in menu bar item.
  • Fixed a rare kernel panic.
  • Removed obsolete help pages.
  • Various other bug fixes and improvements.

Little Snitch 3.0.2 (3894)

  • New Preference setting to limit number of total connections in Network Monitor.
  • Redesigned visualization of Connection Alert timeout.
  • Simplified Alert: Adaptive window width.
  • Improves sorting by precedence in Little Snitch Configuration.
  • Improves detection of Java applications.
  • Improves Little Snitch 2 ruleset import.
  • Bugfixes and performance improvements regarding the ruleset analysis.
  • Fixes an issue which caused system hangs in combination with JollysFastVNC.
  • Fixes an issue which caused recurring connection alerts.
  • Fixes an issue with table background drawing on retina displays.
  • Fixes an issue which produced redundant factory rules.
  • Fixes an issue to prevent Little Snitch Agent crashes.
  • Various other bug fixes and improvements.

Little Snitch 3.0.1 (3883)

Little Snitch Alternative Windows

  • Rules can now be created by dragging applications on Little Snitch Configuration’s dock icon or on Little Snitch’s status menu item.
  • Installer / Uninstaller now offers a retry button if the installation / uninstallation failed.
  • Network Monitor Snapshots are now displayed without traffic meters and with server names in gray.
  • If the “via” executable of a rule does not exist, the rule is now indicated as invalid.
  • Improved generation of notes text for automatically created rules and suggestions.
  • Improved notes text for factory rules
  • Improved installer error reporting if updating boot caches fails.
  • Changed preferences options beginning with “prevent” into their “allow” counterparts.
  • Fixed several bugs in detection of redundant rules (e.g. subdomains covered by domain rule).
  • Fixed a bug where the Network Monitor window could be off screen.
  • Various other bug fixes and improvements.

Little Snitch 3.0 (3876)


  • Brand new Network Monitor
  • Firewall for incoming connections
  • Profiles
  • Silent Mode
  • Simplified Connection Alert
  • Research Assistant for connection attempts
  • Redesigned Configuration Interface
  • Ruleset Analyzer and sorting by precedence
  • Rule Suggestions
  • Domain based rules via Connection Alert
  • More powerful rules (ask-option, time limits, multiple destinations)
  • Improved menu bar item
  • Optimized for MacBook Pro with Retina display
  • New app icon designed by The Iconfactory

Network Monitor

  • Get an overview of network traffic
  • Traffic Diagram
    • Visual representation of traffic amounts over time.
    • Highlighting of system events (application launched, application terminated, computer sleep, …)
    • Display data rates on logarithmic or linear scale.
    • Zoom into time ranges of choice.
    • Supports multi-touch gestures for scrolling and zooming.
    • Selecting in the traffic view causes connection list to only show applications that where active (caused traffic) during that time.
  • Powerful sorting options (last activity, total traffic amount, process name, server name, …)
  • Save snapshots to investigate connection details at any later point of time.
  • Capture traffic of certain applications as .pcap file to open it with packet analyzer tools (such as Wireshark or Cocoa Packet Analyzer).
  • Easily create rules from context menu.
  • Show denied connection attempts.
  • List other hostnames resolving to same IP address.
  • Highlight corresponding rule in Configuration to find out which rule was responsible for allowing / denying this connection.
  • Search Field Tokens – Use keywords (process, server, host, ip, protocol, port or status) to filter your connection list.
  • Network Monitor Inspector.
    • Further details of selected connection entries.
    • Displays information about the process, server identification (hostnames, IP address), connection statistics (ports, traffic amounts, time of first / last activity, …).
    • Connection inspector now shows all information suitable for a search in the connection list as roll-over button so that a search can be started simply by clicking.

Connection Alerts

  • Simplified Connection Alert – choose your preferred level of detail.
  • More versatile temporary rules: Until Quit, Until Logout, Until Restart, For [n] Minutes, etc.
  • Creation of domain rules.
  • Select other hostnames resolving to same IP address to create a rule for.

Little Snitch Windows 10

Research Assistant

  • New Research Assistant for Connections. Little Snitch’s Connection Alert now has a help button. Clicking the button triggers a query to the Research Assistant Database (maintained by Objective Development) and displays information about the current connection attempt.
  • Users can improve the information returned by submitting feedback directly from the Connection Alert. This data is sent anonymously and will be reviewed by Objective Development.


  • Powerful new interface.
  • Manage profiles
    • Create or delete profiles.
    • Easily add rules to profiles via Drag&Drop.
    • Enable profiles by double-clicking on a profile in the sidebar.
  • Sidebar including
    • Rule Filters (Last 24 Hours, Temporary Rules, Unapproved Rules, …)
    • Rule Suggestions.
    • Profiles.
  • Ruleset Analysis
    • Detection of redundant rules.
    • Highlighting of redundant / covered rules, to easily see which rules are obsolete.
  • Sort list of rules by process name, rule precedence or creation date.
  • Improved search
    • Narrow search scope to process, rule, enclosing folders, bundle identifier, notes.
    • Search results now include related rules as well.
  • Backups of rule archives (e.g. Time Machine) can be restored via Little Snitch Configuration.
  • Fullscreen support.


  • Little Snitch offers rule suggestions based on Silent Mode connections, former, already expired temporary rules, login connections and more.
  • Rule suggestions can easily be converted into permanent rules.
  • Rule suggestions can be grouped by their common properties (process, port, host, domain) – Easily create rules that cover most typical connections for certain processes.

Menu Bar Item

  • Revised Design.
  • Monochrome or colored Icon.
  • Optionally displays current data rates as numerical values.
  • Access to important settings.
  • Switch between Profiles quickly.
  • Enable or disable Silent Mode quickly.

Little Snitch Software For Windows

Further Improvements

  • In order to support multiple simultaneous logins, processes are distinguished by the user account that started the process. Rules can be created so that they apply to processes running on behalf of the current user, on behalf of a system account such as root, or on behalf of any account.
  • When no user is logged in, all connections which are not covered by an existing rule are automatically denied. Rule suggestions are created for these connections and can be reviewed in Little Snitch Configuration.
  • If you can’t login without network access (e.g. network accounts), the system can be restarted in Permissive Mode where all connections are allowed before the first user logs in. Allow-rules are automatically created so that future logins succeed. Permissive mode is also used during the first restart after installation, but not after upgrades.
  • All components are code-signed.

Changes since Release Candidate (3871)

Zone Alarm

Little Snitch

  • Help is now available for Little Snitch.
  • Fixed an issue where Ask-Rules could cause a Connection Alert to be shown even in Silent Mode.
  • Fixed a bug where the Connection Alert wrongly indicated that the process terminated.
  • Fixed an issue where rules created from the Connection Alert were for process owner “System” instead of the current user.
  • Connection Alert now honors modifier keys that were held before the alert was shown.
  • Fixed unexpected change of filter scope when creating rules from rule suggestions.
  • Fixed potential crash of Little Snitch Network Monitor when deleting connections from the list.
  • Little Snitch Network Monitor can now be activated with LaunchBar. Simply add /Library/Little Snitch/Little Snitch Network to LaunchBar’s index.

Little Snitch 5.3.2 (6229)

Improved installation and update

  • The update is now completed automatically when Little Snitch was replaced with a newer version.
  • Improved wording during first-time installation and update to better communicate the current state of the installation.
  • If the installation or update fails even after a retry, Little Snitch now offers to create a “Diagnostics Report”.
  • During installation and updates, the application menu now contains a “Create Diagnostics Report” item.
  • Improved appearance of installation window in dark mode.
  • When Little Snitch detects a broken installation during startup, it now offers a “Show Details” button.

Other improvements

  • Improved support for Viscosity OpenVPN client.
  • “More Items…” rows in Network Monitor can no longer be selected, only expanded.
  • Updated database used to show the geographic location of remote servers.

Bug Fixes

  • Fixed a crash in the Network Extension of Little Snitch which occurred during installation of Adobe products.
  • Fixed an issue where Network Monitor could consume a lot of CPU time and thus energy while a connection alert is on screen and the connections window is closed.
  • Fixed a bug where Network Monitor did not indicate a matching rule if the rule requires a particular protocol (e.g. TCP or UDP).
  • Updated detection of Private Relay connections on macOS Monterey.
  • Network Monitor now properly honors the “Mark new rules as unapproved” preference setting.
  • Fixed a bug where one-click subscription of rule groups on web pages did not work for some URLs containing a query.
  • Fixed a bug where the profile selection menu in the connection alert was not correctly aligned.

Little Snitch 5.3.1 (6225)


  • Improved user guidance when starting Little Snitch for the first time. Instructions how to enable the Network Extension are now illustrated.
  • Added support for Private Relay connections on macOS Monterey. Since the Internet address of a Private Relay connection is not known, Little Snitch now shows it as “Private Relay”.
  • When recording traffic of a process via littlesnitch capture-traffic from the command line, traffic from related helper-processes is now included as well. Parameters for the capture-traffic subcommand have been renamed to reflect this change.
  • Connection details in the Network Monitor inspector now reflect the displayed and selected time period.
  • When a temporary rule expires, Little Snitch now shows a connection alert for all related connections that are still active but no longer covered by the now expired rule. These connections can then again be allowed or denied, but until a new decision is made, the previous, temporary decision (allow or deny) remains effective.
  • Improved connection alert to allow the creation of “Until Quit” rules for apps that are connecting via a helper tool, when the helper is already terminated, but the parent app is still running.
  • Improved wording of the term “software update” in German localization.
  • Corrected wording in tooltips of rule buttons in Network Monitor.

Bug Fixes

  • Fixed a rare crash in the Little Snitch network extension.
  • Fixed a rare issue where the host name of the remote server could not be determined for unencrypted HTTP connections.
  • Fixed expiry handling of time based temporary rules. The expiry was delayed while the computer was in sleep mode.
  • Fixed a possible deadlock which occurred when a “New Network” alert should have been shown.
  • Fixed “Sort by Data Volume” behavior in Network Monitor. The values used for sorting did not take the displayed time period into account.
  • Fixed a bug where the type of traffic meters in Network Monitor was not updated in all rows when switching the sort order between Last Activity and Data Volume.
  • Fixed the computation of traffic rates shown in the inspector of Network Monitor. Rates may have been about 30% too low.
  • Fixed a bug where data volume meters did not update when sorting by data volume.
  • When switching the displayed time period in Network Monitor from a long to a short interval, some connections did not drop off the list, even if their last activity was outside the chosen interval. This issue has been fixed.
  • Fixed a possible crash of the Little Snitch application when searching rules for occurrences of a string.
  • Fixed an issue causing lots of warning messages regarding “deprecated use of NSObject in XPC” to be shown in the Console of macOS Monterey.
  • Fixed a bug causing the connection alert not to update the indication that the connecting process just terminated.
  • Fixed a bug causing a “location services disabled” alert message to appear twice when running Network Monitor for the first time.
  • Fixed an issue where starting the Little Snitch application with the Option key held down did not open the Installation Status window.
  • Fixed various bugs with mouse-hovering sensitive areas in the connection inspector of Network Monitor.
  • Fixed an issue causing the “Show in Finder” button in the connection inspector of Network Monitor to disappear when clicked.
  • Fixed a bug causing the Little Snitch application to hang after pasting a large number of hostnames or IP addresses in the rule editor.
  • Corrected a typo in the German localization of the Profile popup in the connection alert.
  • Corrected some layout and appearance issues in the “Welcome to Little Snitch” window.

Little Snitch 5.3 (6215)

This version brings a new feature to Network Monitor: Background processes which are part of the operating system are now grouped into a single entry titled macOS, which can be expanded to show all individual processes. Likewise, iOS/iPadOS/watchOS/tvOS processes that are running within Xcode’s Simulator are now grouped into a single Simulator entry.


  • When the Endpoint Security System Extension is not installed, rules affecting the Berkeley Packet Filter are now marked as inactive.
  • Improved reliability of automatic update of My Location in Network Monitor.
  • Network Monitor now shows a message dialog when it attampts to update the computer’s location automatically but access to location services is denied in the Privacy section of System Preferences.

Bug Fixes

  • Fixed an issue where Little Snitch could freeze during a New Network alert.
  • Fixed an issue where clicking the user notification “Connections During Login” did not reveal these connections in the Little Snitch app.
  • Fixed detection of XPC process ownership on macOS 12 (Monterey) beta.
  • Fixed an issue where the contents of the inspector sidebar in Network Monitor were not updated on a selection change.

Little Snitch 5.2.2 (6209)

This version fixes a crash in Network Monitor when the “Make Connections Private” action was invoked from the context menu.

Little Snitch 5.2.1 (6207)

This is a hotfix release for 5.2. It fixes a crash of the Little Snitch Agent when an iOS app runs in the simulator. The effect of this crash was that no connection alert was shown and Internet connections not covered by existing rules would hang.

Little Snitch 5.2 (6205)

This version focuses on three main areas:

  • The list of „Known Networks“ used for Automatic Profile Switching which was previously shown in a separate window is now integrated into the main window of the Little Snitch application.
  • The search and sort performance in the rules window has been greatly improved.
  • Added support for executables running from randomized file system paths. Rules for executables in /tmp or /var/folders automatically ignore random path components. Rules for executables in other locations can be converted manually into „Identifier Rules“ which refer to the process by its code signature identifier and team identifier or SHA256 (for unsigned scripts) instead of the executable’s path.


  • Improved detection of Wireguard VPN: Added explicit check for PIA VPN Service.
  • It’s now possible to remove other users’ connections shown in Network Monitor after authenticating as an administrator.
  • Rule group modifications or resetting to factory rules can now also be authorized via biometric authentication.
  • When a selected rule changes its position within the list due to some modification, the scroll position of the list is now adjusted so that the rule remains visible.
  • Minor visual improvements in the configuration window.

Bug Fixes

  • Fixed a bug where a connection alert for a terminated process did not disappear after creating a rule.
  • Fixed an issue where a suspicious process warning with “validation error 255” was shown in a connection alert.
  • Fixed identification of iOS processes running in the Xcode debugger. Rules for these processes now match regardless of random path components.
  • Connection Alerts for incoming connections now always create IP address based rules because the remote computer name cannot reliably be known.
  • Fixed an issue where two domains were not recognized as equal due to a lowercase/uppercase mismatch.
  • Fixed a bug where an error message was shown in the inspector of Network Monitor if no Internet Access Policy was available for a process.
  • Fixed a possible crash when showing the list of files available for „Restore from Backup“.
  • Fixed startup issues after restarting computers with Fusion Drive.
  • Fixed a bug where a temporary rule would overwrite a disabled rule and eventually remove it.
  • Fixed a rare crash of the Little Snitch app when searching in rules.

Little Snitch 5.1.2 (6194)

New Features

  • Capturing traffic of individual processes in PCAP format. This feature is available from the command line via littlesnitch capture-traffic.
  • The rules shown in the configuration application can now be sorted by the remote server’s domain name. Clicking the table header in the rules window brings up a menu with available sort options.

Bug Fixes

  • Fixed automatic update of “My Location” in Network Monitor.
  • Fixed a bug where a profile selection button appeared in the connection alert even if no profiles were available.
  • Fixed a rare crash of Little Snitch Agent during upgrade. This fix affects the next upgrade, the crash can still occur when upgrading to this nightly build.
  • Fixed a bug in detecting the path of Java applications.
  • Fixed a possible crash of Network Monitor.

Little Snitch 5.1.1 (6185)

This patch release fixes a possible loss of network connectivity due to a crash of the Little Snitch network extension. This crash could occur when an application used the QUIC protocol. This protocol is a replacement for HTTPS which is used primarily by Google Chrome and its derivatives when connecting to Google servers.

Little Snitch 5.1 (6183)


  • Improved accessibility via VoiceOver.
  • Better detection of VPNs for Automatic Profile Switching.
  • Improved indication of Little Snitch installation issues in the status menu icon.
  • Performing code signature verification for shell scripts and other scripts, if they are signed.
  • Shell scripts and other scripts are no longer considered as the connecting process when they use helper processes like ping or curl. They are now treated as the parent of the helper process.
  • Little Snitch no longer warns when shell scripts and other scripts don’t have a code signature.
  • Accepting code signatures of iOS applications on Apple Silicon Macs.
  • The macOS kernel is now treated as if it were code-signed. This allows the default localnet rules to apply to the kernel.
  • Improved detection of remote computer name. Connection alerts with multiple, ambiguous host names are now less likely.
  • Numerous user interface improvements.

Bug Fixes

  • Fixed various memory leaks in all components of Little Snitch.
  • Fixed a bug where the traffic view in Network Monitor did not display any data.
  • Fixed identity check for code signatures using non-Apple certificates.
  • Fixed an issue where an Identity Mismatch Alert could not be resolved by clicking “Accept Modification”.
  • Fixed an issue where clicking on a silent mode activity notification did not select the corresponding process in the configuration app.
  • Fixed a bug where loading subscribed rule groups did not load anything. This bug occurred with the abbreviated format.
  • Fixed a bug where subscribed rule groups were not updated automatically.
  • Fixed a possible crash when importing configurations from (Time Machine) backup.
  • Fixed a bug where Little Snitch could crash when exporting a configuration backup.

Little Snitch 5.0.4 (6162)


  • Improved Automatic Profile Switching. The delay between a network change and the resulting profile change has been significantly reduced.
  • A warning sign is now shown in the menu bar status icon if the Little Snitch network content filter got deactivated in System Preferences > Network.

Bug Fixes

  • Fixed a bug where the pop-up button for selecting the domain did not appear in connection alerts.
  • Fixed a bug where an identity mismatch error was incorrectly shown for the operating system kernel.
  • Increased startup timeouts to facilitate booting on slow Macs (with HDDs).
  • Fixed a bug where (in some cases) an Internet Access Policy was not shown in the connection alert.
  • An incorrect ownership of the Launch Daemon and Launch Agent configuration files is now fixed automatically during the installation and update process.
  • Fixed a crash when an invalid protocol number was present in a rule.
  • Fixed a bug where servers could have a trailing dot in their name.

Little Snitch 5.0.3 (6160)


  • New icons in the Suggestions section of the Rules Window.
  • Improved selection behavior in the Rules Window after deleting a rule.
  • Improved status menu to show the selected profile at the top level of the menu.
  • Improved layout of numerical data rate values shown in the status menu icon.
  • Improved performance when launching Network Monitor.
  • Improved updating the Little Snitch app to a newer version via Drag and Drop. The app will now start automatically to perform the necessary completion of the installation.

Bug Fixes

  • Fixed a bug where rules making connections private in Network Monitor would not become effective until a restart.
  • Fixed a crash when a connection alert should be shown for www.domain where domain is a top level domain.
  • Fixed incorrect display of port number for incoming connections. Previous versions showed the remote port instead of the local port.
  • Fixed a possible random crash of the Network Extension.
  • Deny-rules are now always applied, regardless of the trustability of the process.

Little Snitch 5.0.2 (6152)


  • If the identity of a process is not checked, the identity of helper processes is now also not checked. This is a concession to the fact that apps without code signature usually ship with helpers that have no code signature. In addition, it allows iOS developers to disable identity checks on Xcode, thereby disabling identity checks on simulator apps running in Xcode's debugger.

Bug Fixes

  • Fixed a bug where configuration changes such as modified preference settings could get lost after a restart of the computer.
  • Fixed a bug where access to URLs like would be interpreted as host 1.2 in domain 3.4.
  • Improved compression of disk image to reduce the size of the download.
  • Added missing localization in Connection Alert.
  • Fixed a bug where Network Monitor opened unexpectedly when the demo period ended.

Little Snitch 5.0.1 (6147)

Improvements and new features

  • Improved handling of DNS lookups. It’s no longer necessary to allow DNS lookups for each process individually.
  • Extended debug capabilities of the command line tool.

Bug fixes

  • Addressing an issue that could cause Little Snitch helper processes to prevent from getting started.
  • Fixed a crash when loading a corrupted configuration file.

Little Snitch 5.0 (6142)

Upgrade pricing

If you have purchased Little Snitch 4 after November 1, 2019, you can upgrade to Little Snitch 5 for free – just use your existing license key. If you purchased Little Snitch 4 before that period, you can get the upgrade at a reduced price.

What’s new in Little Snitch 5?

There has been quite a bit of public discussion recently about the deprecation of various types of kernel extension on macOS. Among them are Network Kernel Extensions (NKEs). You probably did not care so far, but Little Snitch 4 was based on an NKE to do its job. Since NKEs are now deprecated and no longer officially supported by Apple, we have spent the last year rewriting the core of Little Snitch to the Network Extension (NE) framework. While working on this core, we took the chance to revise some old design decisions and add some long anticipated features.

So what are the benefits of the new version?

  • Compatibile with (and requires) macOS Big Sur.
  • Future-proof, because it is based on the new Network Extension and Endpoint Security frameworks.
  • Drag and Drop installation and upgrade, no reboot required.
  • Universal Binary which runs on both Intel and Apple Silicon Macs.
  • Little Snitch now comes with a command line interface for preferences editing, configuration import and export, debugging, logging and access to traffic history.
  • The time range available in Network Monitor’s traffic diagram has been extended from one hour to up to a year.
  • Rules can now specify a list of port numbers, not just one contiguous range as before.
  • The export format for backups is human readable normalized JSON.
  • Recording of network statistics is done independently of Network Monitor. You can quit Network Monitor and still have statistics recorded.
  • Live traffic logs via command line tool.
  • Ready for mass deployment installation in corporate environments.

Little Snitch 5 Beta 2 (6140)

Improvements and new features

  • Optionally control access to /dev/bpf devices (Berkeley Packet Filter). These devices can be used to send and receive data with arbitrary network protocols. Requires installation of an Endpoint Security module in Little Snitch > Preferences > Advanced.

Bug Fixes

  • Improved recovery when reading broken configuration files.
  • Fixed a memory leak in the Little Snitch Network Extension.
  • Numerous other bug fixes.

Little Snitch 5 Beta 1 (6136)

Improvements and new features

  • Lots of user interface refinements to match the new look of macOS Big Sur.
  • Rules can now be created for a list of port ranges, not just a single range.
  • Added command line interface for accessing connection history and traffic log data.
  • The traffic diagram in Network monitor can now display traffic data from up to one year (compared to the previous 1 hour).
  • The menu for selecting the time period that’s displayed by Network Monitor has been moved from the Filter menu in the search field to View menu in the menu bar.
  • Various performance improvements.

Bug Fixes

  • Fixed a bug where a connection alert would not go away after clicking allow or deny.
  • Fixed various crashes of Network Monitor.
  • Fixed a bug where Little Snitch complained about a code modification although the process was not modified.
  • Reduced the number of cases where connection alerts for Internet addresses instead of server names were shown.
  • Lots of other minor bug fixes.

Little Snitch Technology Preview (6130)

  • Improved notification handling. All notifications are now generated by one single component (the “Little Snitch Agent”), which reduces the number of alerts shown by macOS for allowing the display of these notifications.
  • Code identity checks now provide information about a developer’s name, and not just the developer’s team identifier.
  • Improved information shown when the code signature of a process became invalid because a library with missing code signature was loaded.
  • Improved debug logging. Little Snitch no longer writes log messages to individual log files but uses the logging facilities of macOS.
  • Added a command line API for accessing log messages related to Little Snitch.
  • Removed menu items responsible for Network Monitor snapshots because snapshots are no longer available.
  • Fixed possible crashes when importing backups.
  • Various bug fixes and improvements.

Little Snitch Technology Preview (6128)

  • This release brings back “Automatic Profile Switching”. Profiles can now be automatically activated when a network is joined.
  • Little Snitch is now scriptable. The app package contains a command line utility at Contents/Components/littlesnitch which can be used to control Little Snitch from scripts or via Terminal. Scriptability must be enabled in Little Snitch’s Security Preferences.
  • Improved detection of a remote computer’s domain name for connection alerts and for display in Network Monitor.
  • The debug interface for activation and deactivation of components is now password protected.
  • Various bug fixes and improvements.

Little Snitch Technology Preview (6121)

This is a hotfix for a bug in macOS Big Sur Beta 5! Please install this version before upgrading to Beta 5! Otherwise you won’t be able to boot your computer!

This version does not install an Endpoint Security System Extension because Big Sur Beta 5 suffers a kernel panic immediately after booting this System Extension is installed. During upgrade, an existing Endpoint Security System Extension is removed. Currently, the only function of the Endpoint Security System Extension is to detect access to Berkeley Packet Filter devices. This version can therefore not warn when a process tries to access the Berkeley Packet Filter.

The good news is that Big Sur Beta 5 fixes an other kernel panic which occurred on some computers when Little Snitch’s Network Extension was installed.

Little Snitch Technology Preview (6118)

  • Re-implemented process identity checks.
  • Re-implemented creation of Diagnostics Reports.
  • Various improvements and bug fixes in the user interface.

Little Snitch Technology Preview (6112)

  • This version is now a Universal Binary which runs on both Intel and Apple Silicon Macs.
  • Import of rules and settings from previous versions. Choose Little Snitch > File > Restore from Backup… and select a previously created backup file or /Library/Application Support/Objective Development/Little Snitch/configuration4.xpl to import rules and settings from Little Snitch 4. This also works with configurations and backups from Little Snitch 3.
  • Export of rules and settings in JSON format. Choose Little Snitch > File > Create Backup…
  • Various improvements and bug fixes in the user interface.

Little Snitch Technology Preview (6109)

  • Improved upgrade procedure to work around an issue where macOS sometimes fails to start the newly installed network extension. If this problem occurs, the installer now completely uninstalls the previously installed extension before retrying to install the new one.
  • If a previous, incompatible version of Little Snitch is found, this version is now uninstalled automatically in the course of installing the new version. This uninstallation may require a restart of the computer in order to let macOS complete the removal of the kernel extension.
  • Several user interface refinements in the rules window.
  • Little Snitch now correctly identifies connections that were established by a Java process or a shell script.

Little Snitch Technology Preview (6106)

This version is primarily a test of the automatic software update. Please install this version using the automatic software update mechanism, not manually.


If you install this Technology Preview for the first time, please read the installation hints in the release notes of build 6104 below.


  • Redesigned Rules window title bar.
  • Little Snitch specific log files are now created in a dedicated Library/Logs/Little Snitch subdirectory.

Little Snitch Technology Preview (6104)

This Technology Preview of Little Snitch is not yet feature complete. There are several known limitations you should be aware of before you install:


During the installation you will be asked to enable system extensions in System Preferences > Security & Privacy. After clicking on “Open Security Preferences”, the same dialog will appear once again. This is a bug in macOS Big Sur.

After clicking on “Allow…” in System Preferences > Security & Privacy, you will see a confirmation dialog containing two entries labeled “Placeholder Developer”. These incorrect labels are a bug in macOS Big Sur. The checkboxes for both of these entries must be checked.

Known Limitations

Little Snitch Windows Archives Full

  • Rules and settings from previous versions of Little Snitch are not yet imported. Little Snitch will therefore start with the default factory rule set.
  • Backup and restore of rules and settings is not yet implemented.
  • Code identity checks (usually based on code signature) are not yet implemented.
  • Automatic Profile Switching is not yet implemented.
  • Some UI components don’t yet have their final appearance and layout.

Tips and Tricks

  • All data files are encrypted with a password which is stored in the System Keychain (“Little Snitch Encryption Key”). When you make a backup of the files in /Library/Application Support/Objective Development/Little Snitch/, make sure you also backup this password.
  • Traffic history is now recorded by a background process, even when Network Monitor is not running.


If Little Snitch crashes or behaves in an unexpected way, please contact our support using the “Send Feedback” button above.

Make sure to include the following information:

Little Snitch Windows Alternative

  • Version number of your Little Snitch app.
  • A textual description of the issue: What did you do, what would you have expected to happen and what did happen.
  • Crash logs of Little Snitch components, which can be found in sidebar under “Crash Reports”.
  • Logs from Little Snitch under /Library/Logs/ and ~/Library/Logs/.
  • Screen shots which describe the issue (if applicable).