🛡️🔒 BEST PRACTICES TO SECURE WEB APPLICATIONS

🔸 TL;DR

Strong auth isn’t enough. Loiane shows how to layer defenses—secure coding, strict input validation, robust error handling, safe file uploads, and more—to reduce real-world attack surface and keep your web apps resilient. ✨

🔸 WHY THIS MATTERS

Modern apps fail at the seams: validation, error messages, file handling, and forgotten defaults. This talk is a practical checklist to harden those seams without slowing teams down.

🔸 WHAT’S INSIDE

▪️ Secure coding mindset: least privilege, fail-safe defaults, and don’t trust client input.

▪️ Input validation: whitelist > blacklist, canonicalize first, validate on server, re-validate at boundaries.

▪️ Error handling: no stack traces to users; log safely with correlation IDs; avoid leaking secrets.

▪️ Safe file uploads: check MIME + extension + content, limit size, scan, store outside webroot, generate safe names.

▪️ Session & auth hygiene: short tokens, rotation, SameSite/HttpOnly/Secure cookies, CSRF defenses.

▪️ Output encoding: context-aware escaping for HTML, JS, URLs to block XSS.

▪️ Dependency risk: pin versions, use SCA, renovate often, block known-bad libs.

▪️ Security headers: CSP, HSTS, X-Content-Type-Options, X-Frame-Options.

▪️ Observability: structured logs, alerting on auth anomalies, rate limiting, WAF/CDN rules.

▪️ Process: threat modeling, security code reviews, automated checks in CI/CD.

🔸 TAKEAWAYS

▪️ Defense-in-depth beats any single “silver bullet.”

▪️ Validate early, encode late, and never leak internals in errors.

▪️ File uploads are high-risk—treat them like untrusted executables.

▪️ Automate: scanners + SCA + CI checks to keep drift from creeping in.

▪️ Make security a developer habit, not a once-a-year audit.

👉 Watch the talk: https://bit.ly/jccb7

🙏 Thanks, Loiane, for the crisp, actionable guidance!

#AppSec #WebSecurity #OWASP #SecureCoding #DevSecOps #JavaScript #TypeScript #Spring #Angular #React #SecurityHeaders #XSS #CSRF #CSP #Loiane