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Learn Web Security in TypeScript

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Overview

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Learn web security in TypeScript by hardening authentication, authorization, storage, infrastructure, and incident response in a real Express app.

Syllabus

OWASP

Learn the OWASP Top 10 and how common web security risks shape secure application design.

Authentication

Learn how web apps verify users with sessions, cookies, password resets, OAuth, SAML, OIDC, and API keys.

Multi-Factor Authentication

Learn how MFA improves account security with hardware tokens, TOTP, passkeys, and recovery flows.

Authorization

Learn how to enforce access control with least privilege, RBAC, ABAC, IDOR defenses, and signed URLs.

Injection

Learn how injection attacks work and how to defend against SQL injection, unsafe archive extraction, prompt injection, and file upload risks.

Client-Side Security

Learn how to defend browser-facing apps against XSS, CSRF, clickjacking, unsafe CORS, and missing security headers.

Data Leaks

Learn how to prevent sensitive data exposure through safer API responses, error handling, and sanitized logs.

Infrastructure Security

Learn how to manage secrets, limit build and source leaks, defend against SSRF and redirects, and handle dependency risk.

Secure Transport

Learn how HTTPS, TLS, certificates, encryption, and signatures protect data in transit.

Secure Storage

Learn how to protect stored data with encryption, key management, password KDFs, database controls, and safe payment flows.

DDoS

Learn how to reduce abuse and availability risks with rate limits, throttling, queues, resource limits, bot detection, and CAPTCHA.

Incident Response

Learn how teams detect, triage, report, contain, and learn from security incidents.

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