Threats, mitigations, and defensive design for auth systems.
Credential stuffing, broken session handling, JWT confusion attacks, account enumeration, and the other ways login systems get broken in production — plus the concrete fixes for each.
How to design rate limiting for login, OTP, and reset endpoints — algorithms, what to key on, lockout strategies, and avoiding the traps that let attackers through or lock out real users.
Authentication
Foundations, flows, and patterns for user authentication on the modern web.
BrowseOAuth & OIDC
OAuth 2.0, OpenID Connect, PKCE, and federated identity in depth.
BrowseJWT
Tokens, signatures, claims, and the things that go wrong with JWTs.
BrowsePasswordless
Magic links, OTPs, passkeys, and what to use when.
BrowseReact Auth
Authentication patterns specific to React and SPAs.
BrowseMulti-Tenant Auth
Designing auth for B2B SaaS — orgs, roles, and isolation.
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