Kill Switch version history - 7 versions
Kill Switch by Halo
Kill Switch version history - 7 versions
Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.4.4
Released Oct 25, 2026 - 37.73 KBWorks with firefox 140.0 and later-HOTFIX
. Speed optimizations.Source code released under MIT License
Older versions
Version 1.4.3
Released Oct 22, 2026 - 36.55 KBWorks with firefox 140.0 and laterVersion 1.4.3.
-HOT FIX
Fixed the unexpected property issue that prevented the add-on from working.Source code released under MIT License
Version 1.4.2
Released Oct 20, 2026 - 36.17 KBWorks with firefox 140.0 and laterVersion 1.4.2
FIXES
- Logouts are now verified: the kill switch re-checks, retries leftovers, and clears sites a second way (by hostname).
- Open tabs on your listed sites are blanked before the keybind closes the browser, so they can't re-create your login.
- If a cookie can't be removed, you get a notification instead of a silent failure.
- Subdomain site data (like gist.github.com) is no longer skipped.
PERFORMANCE
- Wipes are much faster: the keybind now finishes in about 150 ms instead of about 1.6 s in testing.
- Steps run in parallel, and the safety pause only happens when a page on your sites is still open.
NOTE
- If you stay logged in, make sure the site's login domain is on your list (YouTube logins live on google.com).Source code released under MIT License
Version 1.4.1
Released Oct 19, 2026 - 35.74 KBWorks with firefox 140.0 and laterHOTFIX
-Triggering the kill switch used to not log you out of the websites you put in (FIXED).
Note: when triggered from the pop-up, it will not log you out of the websites you have open in your tabs.Source code released under MIT License
Version 1.4
Released Oct 18, 2026 - 34.8 KBWorks with firefox 140.0 and laterVersion 1.4
NEW
- Nuclear option: wipes the browser data you choose, then optionally closes the browser. Double-click the toolbar button or press Alt+Shift+F9 (no window opens; press twice by default).
- Separate toggles for each data type, plus its own hidden nuclear site list.
- Change both keybinds in Settings, with a Reset button. Defaults stay Alt+Shift+C and Alt+Shift+F9.
- Edit your site list inside the extension. It stays hidden until you click "Show my sites".
- Site access is requested per site, not for all websites.
IMPROVED
- Firefox container cookies and subdomain site data are now cleared.
- If a shortcut can't run, you get a notification and the browser stays open.
NOTES
- Firefox doesn't allow symbol keys (= + - ) in extension shortcuts.
- No data is collected and no network requests are made.Source code released under MIT License
Version 1.3
Released Oct 17, 2026 - 23.54 KBWorks with firefox 140.0 and later-Added Dark mode (changed using the Moon/Sun switch).
-Revamped the UI to accommodate new features.
-Made the website list changeable within the GUI.
NOTE: You can only add websites within the popup menu. Removing and viewing the list is under the newly added settings menu.
-Added a settings menu where the website list is located.
-Made the website list hidden behind the settings menu for privacy of the user.
-Made the browser close after triggering the add-on with the keyboard shortcut.Source code released under MIT License
Version 1.2
Released Oct 14, 2026 - 15.98 KBWorks with firefox 140.0 and laterSource code released under The Unlicense