Adaptive skill practice — find your level, get sharper.
Security practice
Think like an attacker and a defender
Application and software security in depth — the OWASP Top 10 and injection/access-control flaws, threat modeling (STRIDE, trust boundaries), authentication vs authorization and the protocols (MFA, sessions, JWT, OAuth2/OIDC, SAML), cryptography fundamentals (hashing vs encryption, symmetric vs asymmetric, signatures, HMAC, KDFs, TLS/PKI), secrets management, and supply-chain security. Goes deeper than the web-fundamentals security slice. Part of the Developer track.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.
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