Is Session Boss safe?

Clean risk

Session Boss saves snapshots of open tab URLs, titles, and window details in browser local storage for session restore.

When tabs or windows change, Session Boss queries open tabs and records each tab's URL, title, favicon URL, incognito/container state, opener tab, and reader-mode flags. It stores this session data with browser.storage.local and can download the saved sessions as JSON only from user-triggered export actions.

William Wngv2.11.7Firefox Add-ons
2Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 2.11.7. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • See the address and title of every tab you have open

    tabs

  • Store data in your browser

    storage

  • Read and change cookies, including the ones that keep you signed in

    cookies

  • Schedule its own background tasks

    alarms

  • Start, monitor and manage your downloads

    downloads

contextualIdentities
Updated 30 September 2026amo-946600