Web Application Security: An OWASP Checklist for Developers
The OWASP Top 10 isn't security theory — it's a practical summary of the most actually-exploited vulnerabilities in real web applications.
core vulnerability categories in the OWASP Top 10
golden rule cutting most risk: never trust any user input
acceptable reliance on client-side validation alone without server checks
The OWASP Top 10 is a periodically updated list of the most common and dangerous vulnerability categories in web applications, and a solid starting point for any security review instead of inventing a checklist from scratch.
The Most Repeated Vulnerabilities
SQL injection via unsanitized user input in database queries, Cross-Site Scripting (XSS) via rendering user content into HTML without sanitization, and Broken Access Control allowing a user to reach data they have no permission for.
One Simple Practice That Cuts Most Risk
Never trust any user input: sanitize and validate all input on the server always (never relying on client-side validation alone), and always use parameterized queries instead of concatenating raw text into SQL queries.
Questions & Answers
01Is client-side validation enough?
No, it can easily be bypassed by the user themselves; real, enforced validation must always happen on the server.
02How often is the OWASP Top 10 updated?
It's updated periodically (not necessarily yearly) based on real data about the most exploited vulnerabilities, so it's worth revisiting regularly, not just once.
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