Broken access control is a major security risk for web applications and APIs because it allows attackers to gain unauthorized access to sensitive data or functions. Developers must understand the different types of access control flaws, their severity, and how to detect them effectively. Preventing these vulnerabilities requires enforcing strict authentication and authorization, validating user roles, and blocking privilege escalation paths. By applying best practices and strengthening access control mechanisms throughout development, teams can significantly reduce exposure and build more secure applications and APIs.

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