Little Snitch 4.0.3 – Alerts you about outgoing network connections.

Little Snitch 4.0.3

Little Snitch gives you control over your private outgoing data.

Track background activity
As soon as your computer connects to the Internet, applications often have permission to send any information wherever they need to. Little Snitch takes note of this activity and allows you to decide for yourself what happens with this data.

Control your network
Choose to allow or deny connections, or define a rule how to handle similar, future connection attempts. Little Snitch runs inconspicuously in the background and it can even detect network-related activity of viruses, trojans, and other malware.

What’s New

Version 4.0.3:

Network Monitor
  • Added preferences option for showing data rates either in Bytes/s or Bits/s
  • More prominent indication if a filter is currently active
  • Added support for full screen mode
  • Improved "Simulated Input Ignored" notification
  • Fixed: Notifications weren’t shown under some circumstances
  • Fixed: Silent Mode Notifications are no longer shown when the Network Filter is turned off
Little Snitch Configuration
  • Improved keyboard control in rule editor
  • Fixed broken help links in the right sidebar of the rules window
General Improvements
  • Improved installation procedure on macOS 10.13 High Sierra
  • Improved code signature checking
  • Improved Deep Packet Inspection
  • Improved Touch Bar support
  • Improved support for "lftp"
  • Improved support for Viscosity OpenVPN client
  • Improved support for FTP and MySQL
  • Fixed an issue when creating via-rules in the connection alert, when the main-process and the via-process are from different users
  • Various bug fixes and performance improvements
  • Overall improved stability


OS X 10.11 or later, 64-bit processor


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5 Responses

  1. twa says:


    can you get the latest version of little snitch.
    This version doesnt work with the latest version of mac os


  2. jaynine says:

    Please update to v4.4.2 to support Catalina

  3. sach999 says:

    Yes! Please update to v4.4.3 for Catalina
    thanks so much

  4. MetroEx says:

    Need v4.4.3 for Mojave
    thanks so much

  5. TellingTrue says:

    My guess is that the company made a huge deal with the cracker/s so there won’t be an actual newer version cracked soon.

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