Zevr Guard

Your browser talks to dozens of companies on every page you visit. Zevr Guard shows you exactly who — on a live world map — and blocks the dangerous ones automatically.

Install once. No setup, no account. Protection starts the moment you add it.

━━━ WHY ZEVR GUARD ━━━

✔ Blocks malware & phishing with a threat list that updates itself daily — no waiting for extension updates ✔ Detects lookalike phishing domains (examp1e.com, exаmple.com, example.com.verify-account.net) with on-device heuristics — caught even before they reach any blocklist ✔ Blocks entire countries with one tap — see a connection you don't like on the map, block everything from that region ✔ Guards password entry: warns before you type a password on an unencrypted page, a suspected lookalike, or a site you've never signed into ✔ Identifies the companies behind 115,000+ tracker signals, not just cryptic domain names ✔ 100% local matching — your browsing URLs never leave your device. No telemetry, ever ✔ Built for Manifest V3 from day one — works today, works after the MV2 shutdown ✔ Fully open source (GPL-3.0) — every claim above is verifiable in the code

━━━ WHAT YOU'LL SEE ━━━

1. Risk score & live tracker list (popup) A per-tab risk score, every third-party connection with company and country, and one-tap block/allow controls.
2. Live Globe (side panel) Watch your data cross the world in real time, broken down by company and connection count. Screenshot-worthy — literally: a built-in share card turns any page's scan into an image.
3. Auto-block warning screen Navigate toward a known malicious domain and Zevr Guard intercepts the request with a clear warning — before the page ever loads.
4. Weekly protection report Blocked-per-day chart, top watching companies, most blocked domains. All computed on your device — and one click turns your week into a shareable recap card.
5. Granular controls Toggle Malware/Phishing, Advertising, and Tracking independently. Pause blocking on a single site if it breaks. Custom block/allow lists and per-country blocking included.
6. Community protection One click reports a phishing site for review — approved reports reach every Zevr Guard user through the daily threat feed. Reports send the domain name only, and only when you choose to.

Screenshots use seeded sample data so the popup, side panel, and warning screen can be shown clearly in a single image. The "Dangerous" risk score shown for zevrhq.com (our own site) is a demonstration value — in real use, every score is computed from the actual third-party connections seen on that page. zevrhq.com itself is not classified as malicious; it's used only as a placeholder host.

━━━ HOW IT WORKS ━━━

• Threat list: refreshed daily from URLhaus and curated malware/phishing feeds
• Tracker ID: 115,000+ signals merged from leading open-source tracker datasets
• Geo / ASN lookup: GeoLite2, bundled and fully offline
• Matching: 100% local, via the browser's declarativeNetRequest API
• No URL uploads. No telemetry. No account required.

Zevr Guard never sends your browsing history anywhere. The only automatic outbound request is a daily fetch of threat-list updates from our CDN — it carries no information about you or the sites you visit. The single exception is one you control: clicking "Report as phishing" sends that one domain name to us for review, and nothing else. Don't take our word for it: the code is public.

━━━ OPEN SOURCE ━━━

Source code (GPL-3.0): https://github.com/krystasis/zevr-guard