Case Studies

Analyze an MFA recovery bypass, JWT accepted for the wrong audience, nonce reuse in encrypted records, a confused-deputy OAuth client, and a break-glass account with no review. Issue risk and remediation decisions.

Required evidence

Submit diagrams, versioned configuration, runnable positive and negative tests, audit events, one rejected design, remediation record, and residual-risk owner. Scanner output without mechanism-level triage does not pass.

Oral defense

Name the attacker and asset, explain the exact control property, demonstrate a denied misuse case, and execute revocation or safe recovery.

Source backbone

Use NIST SP 800-63, OWASP ASVS, relevant RFCs, and Building Secure and Reliable Systems.