Portswigger Guides 15 WebSocket attacks guide Oct 23, 2025 Authentication vulnerabilities guide Oct 23, 2025 Broken access control guide Oct 22, 2025 Path traversal guide Oct 2, 2025 DOM based vulnerabilities guide Oct 2, 2025 XXE guide Sep 2, 2025 Clickjacking guide Aug 27, 2025 CORS guide Aug 27, 2025 CSRF guide Aug 24, 2025 SQLI guide Jul 21, 2025 XSS guide Jul 8, 2025 SSTI guide Jul 8, 2025 SSRF guide Jul 8, 2025 Ofuscation guide Jul 8, 2025 Command injection guide Jul 8, 2025