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Independent security research
ZeroAuthority is a research toolkit for checking domains, vulnerabilities, certificates and internet disruptions against public sources. Every result shows where it came from, so you never have to take our word for it.
$ certificate-transparency example.org
Sources
crt.sh Certificate Transparency
Cloudflare DNS-over-HTTPS
Each tool lists the sources it used next to its results.
What you can do
102 tools for domains, DNS, certificates, vulnerabilities and dependencies, built on public data sources.
Browse tools →A permanent record of internet disruptions, with cause, scope and timeline for each event.
View archive →Save results and notes into private cases, and store credentials encrypted with expiring share links. We cannot see either.
Open investigations →Every report we generate carries a unique code. Anyone, including a court, can confirm a document is genuine without seeing its contents.
Verify a document →