MalExt Sentry - Malicious Browser Extension Scanner

Scans your extensions against a live malicious extension database and flags dangerous permissions - with explanations.

MalExt Sentry - Malicious Browser Extension Scanner Detect and remove malicious Browser extensions. MalExt Sentry scans your installed extensions against a live, open-source malware database, audits dangerous permissions, and now warns you on the Chrome and Edge Web Store before you install a known-malicious extension. NEW IN v2.1.0 - Pre-install protection: when you open an extension's page on the Chrome Web Store or Microsoft Edge Add-ons store, MalExt Sentry checks it against the threat database and warns you before you click Install - toolbar alert badge plus an instant warning popup with the reason it was flagged. - Threat sources are now clickable links, so you can verify every flag yourself. - Redesigned interface: cleaner, faster, easier to read. HOW IT PROTECTS YOU 1. Known malware detection - cross-references every installed extension against a continuously updated database of extensions flagged or removed from the Chrome Web Store for malware, adware, spyware, or data theft. Database is public and hosted on GitHub. 2. Pre-install store check - blocks threats before they reach your browser by warning you directly on Chrome Web Store and Edge Add-ons listing pages. 3. Permission audit - flags extensions with high-risk permissions and explains each one in plain English: - Script injection (can run code on any page you visit) - Cookie access (can read your login sessions) - Clipboard reading (can silently read what you copy) - Full page control, traffic interception, system access, and more 4. Permission change alerts - warns you if an extension gains new dangerous permissions after an update. FEATURES - Automatic background scan every 30 minutes - Instant alert when a newly installed extension matches a known threat - Optional auto-disable: flagged extensions are switched off immediately - One-click uninstall for detected threats - Trust list: silence alerts for extensions you know, with automatic re-flagging if their permissions change - Export scan report to clipboard - Risk ratings (Critical / High / Medium / Low) based on permission combinations - Works in Google Chrome and Microsoft Edge PRIVACY Runs entirely on your device. The only network request is a one-way download of the public threat database from GitHub. No data about you, your extensions, or your browsing is collected, transmitted, or stored outside your browser. No telemetry, no analytics, no tracking. PERMISSIONS EXPLAINED - "management": read your list of installed extensions to scan them. Nothing is modified or removed without your explicit confirmation. - Store site access (chromewebstore.google.com, microsoftedge.microsoft.com): read the extension ID on store listing pages only, to warn you before a malicious install. No other browsing data is visible to the extension. Open source and actively maintained: https://github.com/toborrm9/malicious_extension_sentry Live database and dashboard: https://malext.io