The foundational web security concepts every developer should internalize before shipping code.

The security risks of LLM-powered systems and the guardrails that reduce them.

Webhooks, idempotency keys, and reconciliation for robust payment gateway integration.

Design permissions that editors, reviewers, and admins can work with safely.

Protect APIs from abuse and traffic spikes with token bucket and sliding window limits.

Tokens, same-site cookies, and the mechanics of preventing cross-site request forgery.

Context-aware escaping, CSP headers, and output encoding to stop cross-site scripting.

Prepared statements, input validation, and the patterns that eliminate injection risk.

MIME sniffing, extension validation, and secure storage for user uploads.