Fakealertblocker Tech Sup

FakeAlertBlocker – Tech Support Scam Blocker

⚠️ This extension is actively being developed. Features may change, and some rough edges are expected. Feedback is welcome and appreciated.

FakeAlertBlocker protects you and your family from tech support scam pages — the fake "Your computer is infected!" pop-ups designed to lock your browser, frighten you into calling a fraudulent phone number, and steal your money.

How it works

The moment you land on a scam page, FakeAlertBlocker detects it using behavioral and content analysis — looking for browser-locking scripts, fake virus warnings, suspicious overlays, and scam phrases. Before any malicious code can run, the extension neutralizes common scam tactics like browser lock loops, dialog spam, and forced fullscreen. A rescue banner appears at the top of the page, your controls are immediately restored, and you're automatically navigated away to safety within seconds.

Features

🚨 Instant scam detection — Identifies fake alert pages using multiple signals: scam phrases, keyboard blocking, high-z-index overlays, and more

🔓 Browser unlock — Automatically defeats browser-locking tactics including beforeunload hijacking, runaway dialog loops, and context menu disabling

🚪 Auto-leave timer — Navigates you away from the scam page automatically (configurable, or turn it off and dismiss manually)

⌨️ Emergency escape — Press Ctrl+Shift+X at any time to force-unlock your browser and leave the page

🛡️ Ad-block wall & paywall bypass — Automatically closes ad-block nag screens, paywall pop-ups, and newsletter sign-up overlays

🚫 Network-level ad blocking — Blocks known scam-associated URLs and ad networks using Chrome's declarative network request rules

✅ False positive protection — Whitelist any site with one click if it's flagged incorrectly; it will never be flagged again

📢 Community reporting — Optionally report scam pages and false positives to help improve detection for everyone

Your privacy

FakeAlertBlocker does not track your browsing history, sell your data, or transmit any personal information. Anonymous detection reports (URL + signals) are only sent with your explicit permission and can be disabled at any time in settings.

Work in Progress

This is a personal project under active development. New features, UI improvements, and detection improvements are added regularly. If something breaks or you have a suggestion, please leave a review or report an issue — it genuinely helps.