Syvielcheck

Check if your email has leaked, and if your mail domain is properly protected.

Your connection info

None of this is stored โ€” it's just what your browser already sends to every site you visit.

Optional: if you own a domain, we'll check its SPFโ“˜/DKIMโ“˜/DMARCโ“˜ setup.

๐Ÿ”’ We never store your email or domain. No account, no tracking.

๐Ÿ”‘ Is your password compromised?

Check if a password has shown up in a known breach โ€” without ever sending it anywhere.

Check

๐Ÿ•ต๏ธ Tracker scanner

Check which third-party ad/analytics trackers a website loads.

Check

๐Ÿงพ Security headers

Check if a site sends the recommended HTTP security headers.

Check

๐Ÿ”’ TLS/HTTPS check

Check a domain's HTTPS certificate: expiry, issuer, validity.

Check

๐Ÿ“ท QR code checker

Decode a QR code and check if its destination looks like phishing โ€” all in your browser.

Check

๐Ÿ”” Continuous monitoring

โ‚ฌ2/month: we re-run the check regularly and email you if a new breach shows up, or if your SPFโ“˜/DKIMโ“˜/DMARCโ“˜ breaks.

Subscribe โ€” โ‚ฌ2/month
5 checks performed, 543 breaches found in total.