Understand Web Security

XSS happens when a website allows attackers to inject malicious scripts into pages that other users view. These scripts can run in visitors' browsers without their knowledge.

SQL injection allows attackers to send commands directly to your database. The database is where all your website's important data lives - user info, orders, content, everything.

Security headers are special instructions that your web server sends to browsers to enable additional protections. They tell browsers how to handle your website more safely.

IDOR happens when a website doesn't properly check if a user is allowed to see certain information. Attackers can access other people's private data by guessing or changing IDs in URLs.

SSRF tricks your website into fetching information from places it shouldn't. The website acts as a middleman, potentially accessing internal systems that are supposed to be private.