OWASP (Open Web Application Security Project) publishes the definitive list of web application vulnerabilities. Understanding these 10 vulnerabilities covers 90% of web security.
When users can access data they shouldn't. Example: Changing /api/user/123 to /api/user/124 to see another user's data — this is called IDOR (Insecure Direct Object Reference). Ye sabse zyada paaya jaane wala bug hai!
When untrusted user input is interpreted as code. SQLi can bypass logins, dump databases, and even delete entire tables. Prevention: Always use parameterized queries!
Weak passwords, no MFA, predictable session tokens. This allows brute force attacks and credential stuffing.
Learn all 10 in detail with our comprehensive ethical hacking course. Practice safely and legally!
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