Sentinel: a Manifest V3 extension for real-time phishing detection

Phishing pages get better every year. Sentinel is a Manifest V3 browser extension I built to layer multiple signals:

• URL heuristics / typosquat-style checks
• Optional Google Safe Browsing lookups
• Brand / page content signals
• Popup dashboard + in-page banner + block interstitial

Stack

Chrome extension MV3 · vanilla JS · configurable sensitivity

It's a portfolio-grade security UX project — readable architecture docs included in the repo.

I'm Artyom Mamyan — full-stack developer in Yerevan, open to remote. Related: WebMask, Seal.

GitHub: mamyan2001-gif/sentinel