Hacking & SecuritySecurity
Mitigating XSS & CSRF Vulnerabilities in Modern Single-Page Applications
Defense-in-depth techniques for securing JWT tokens, enforcing strict Content Security Policy (CSP), and hardening SameSite cookies.
Tech Passion Lead
Software Engineer
9/25/20266 min read1850 views
Key Takeaways
Production-focused engineering insights designed for scalable software architecture and real-world developer workflows.
# SPA Security: XSS & CSRF Prevention
Storing raw session tokens in browser LocalStorage exposes web applications to severe token exfiltration if an XSS vector is triggered.
```http
Content-Security-Policy: default-src 'self'; script-src 'self' 'nonce-rAnd0m';
Set-Cookie: token=jwt; HttpOnly; Secure; SameSite=Strict
```
TypeScript
// Clean Software Architecture Implementation
export class ArchitectureEngine {
constructor(private readonly config: SystemConfig) {}
public async executePipeline(): Promise<void> {
console.log("Running Tech Passion Engine...");
}
}Topics:#Security#OWASP#JWT#Web Security