That’s how Dast Kerberos problems tend to show themselves—when everything else is quiet, and the auth flow you thought was bulletproof just decides it isn’t. If you’ve ever dug through a Kerberos ticket trace at night, parsing timestamps and encryption types, you know the feeling. Dast Kerberos testing is the difference between a quiet morning and a 4-hour outage that no one saw coming.
Dast Kerberos combines dynamic application security testing (DAST) with Kerberos protocol awareness. It’s not a passive scan. It actively probes Kerberos flows the way a real attacker would: malformed tickets, replay attacks, misconfigured service principals, weak cipher fallback. It finds issues your integration tests miss. It looks where the easy scanners don’t.
Most teams trust Kerberos too much because it “just works” in dev. In production, it’s different. Service tickets expire in the middle of batch jobs. Clocks skew between nodes. SPNs mismatch because of DNS quirks. A golden ticket feels like magic in a config file, but to an intruder it’s a skeleton key. Dast Kerberos runs those attack paths deliberately, over the wire, in an environment that behaves like the real world. That’s how you see the cracks before someone else does.