Comparison · facts as published on each site in October 2026; tell legal@kavachscan.com if something is out of date
Kavach vs Mozilla Observatory
Mozilla's Observatory is a respected open-source grader covering headers, CAA, subresource integrity and redirects. It is a one-off check with no remediation beyond documentation. Kavach covers the same ground plus cookies, CORS, exposed files, email identity and the code, and turns every finding into a stack-specific fix with monitoring afterwards.
| What | Mozilla Observatory | Kavach |
|---|---|---|
| Security headers and CSP analysis | Yes | Yes, with CSP quality scoring and fixes |
| Subresource integrity, CAA, redirects | Yes | Yes |
| Cookie flags and CORS | Cookies partially | Yes |
| Exposed .env and .git | No | Yes, for verified owners |
| Email identity (SPF, DKIM, DMARC) | No | Yes |
| Source code scan | No | Yes |
| Copy-paste fixes per stack | Documentation links | Yes |
| Monitoring and alerts | No | Yes |
| Price | Free, open source | Free plan; paid plans for monitoring, teams and agencies |
Try Kavach free → Visit Mozilla Observatory
Questions
Should I use Observatory or Kavach?
Use both if you like; they agree on headers. Kavach is the one that tells you what to paste into nginx or next.config.js, checks the code, and alerts you when a deploy regresses.
Why do the grades differ?
Different weightings and different scope. Kavach weights by site profile (e-commerce, SaaS, API, AI-built) and includes controls Observatory does not test.
Other comparisons
Kavach vs securityheaders.com · Kavach vs CheckVibe · Kavach vs Vibe App Scanner
Mozilla Observatory is a trademark of its owner. Kavach is not affiliated with it. Both tools report observations, not guarantees.