The Cloudflare Outage May Be a Security Roadmap

Source: Krebs on Security

Author: BrianKrebs

URL: https://krebsonsecurity.com/2025/11/the-cloudflare-outage-may-be-a-security-roadmap/

ONE SENTENCE SUMMARY:

Cloudflare’s outage revealed vulnerabilities, offering organizations insights into their reliance on its services for security and functionality.

MAIN POINTS:

  1. The Cloudflare outage briefly disrupted many major websites.
  2. Some customers managed to switch away from Cloudflare during the outage.
  3. Experts recommend reviewing web application firewall logs for vulnerabilities.
  4. Cloudflare effectively blocks malicious traffic but outages expose potential weaknesses.
  5. Companies should reevaluate security practices relying on Cloudflare protection.
  6. The outage served as a network penetration test opportunity for threat actors.
  7. Nicole Scott described the outage as a necessary stress test for organizations.
  8. Organizations should consider emergency DNS or routing changes and their implications.
  9. Cloudflare’s disruption was due to a database system permissions change, not an attack.
  10. Over-reliance on single providers like Cloudflare presents a significant risk.

TAKEAWAYS:

  1. Evaluate current reliance on Cloudflare for security protections.
  2. Review and analyze logs for vulnerabilities during outages.
  3. Develop intentional fallback plans for similar future incidents.
  4. Spread dependencies across multiple providers to prevent single points of failure.
  5. Monitor security controls continuously to prevent over-reliance on single solutions.