Record-breaking 31.4 Tbps DDoS attack hits in November 2025, stopped by Cloudflare
Overview
In November 2025, a massive DDoS attack reached a peak of 31.4 terabits per second, making it one of the largest ever recorded. The attack was executed by the AISURU/Kimwolf botnet and lasted for just 35 seconds. Fortunately, Cloudflare's security systems were able to automatically detect and block the attack before it could cause significant disruption. This incident is part of a worrying trend of increasingly powerful and brief DDoS attacks that can overwhelm even the most robust defenses. Organizations must remain vigilant as such attacks not only threaten individual services but also have the potential to disrupt broader internet infrastructure.
Key Takeaways
- Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
- Affected Systems: Cloudflare services, AISURU/Kimwolf botnet
- Timeline: Newly disclosed
Original Article Summary
AISURU/Kimwolf botnet hit a record 31.4 Tbps DDoS attack lasting 35 seconds in Nov 2025, which Cloudflare automatically detected and blocked. The AISURU/Kimwolf botnet was linked to a record-breaking DDoS attack that peaked at 31.4 Tbps and lasted just 35 seconds. Cloudflare said the November 2025 incident was part of a surge in hyper-volumetric HTTP […]
Impact
Cloudflare services, AISURU/Kimwolf botnet
Exploitation Status
This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.
Timeline
Newly disclosed
Remediation
Not specified
Additional Information
This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.
Related Topics: This incident relates to Botnet, DDoS.