What A09:2025 Security Logging and Alerting Failures requires
OWASP Top 10:2025 A09:2025 Security Logging and Alerting Failures. Without logging and monitoring, attacks and breaches cannot be detected, and without alerting it is very difficult to respond quickly and effectively during a security incident. Insufficient logging, continuous monitoring, detection, and alerting to initiate active responses occurs any time: This category sits within the OWASP Top 10:2025 (the 2025 edition, finalized January 2026), the canonical industry list of the ten most critical web application security risks. Organizations building web applications should treat each of the ten categories as both a design constraint and a continuous-monitoring obligation, with policies, automated testing, and incident response procedures defined per category. Mapped weaknesses: CWE-117, CWE-221, CWE-223, CWE-532, CWE-778.
Pillar: Cybersecurity · Authority: OWASP Foundation (Open Worldwide Application Security Project) · Version: 1.0.0 · Last updated:
Primary source: https://owasp.org/Top10/2025/A09_2025-Security_Logging_and_Alerting_Failures/
SHA-256 integrity: 5ad7db5983bd677555cf0bf7b335176c04f858bbc4e54955a3faea2f04ccf0d0
Primary Citations — 13 traced to source
- OWASP Top 10:2025, A09:2025 Security Logging and Alerting Failures, How to Prevent: 'Ensure all login, access control, and server-side input validation failures can be logged with sufficient user context to identify suspicious or malicious accounts and held for enough time to allow delayed forensic analysis.'
- OWASP Top 10:2025, A09:2025 Security Logging and Alerting Failures, How to Prevent: 'Ensure that every part of your app that contains a security control is logged, whether it succeeds or fails.'
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Access
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