Record 29.7 Tbps DDoS Attack Linked to AISURU Botnet with up to 4 Million Infected Hosts

The Hacker News

December 4, 2025 at 6:52 AM

Actively Exploited

Overview

Cloudflare has reported the largest DDoS attack ever recorded, reaching 29.7 Tbps, attributed to the AISURU botnet, which has been linked to multiple significant attacks over the past year. This incident underscores the growing threat posed by botnets and the need for robust cybersecurity measures to mitigate such high-volume attacks.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Action Required: Implement DDoS mitigation strategies, enhance network security protocols, and monitor for unusual traffic patterns.
Timeline: Newly disclosed

Original Article Summary

Cloudflare on Wednesday said it detected and mitigated the largest ever distributed denial-of-service (DDoS) attack that measured at 29.7 terabits per second (Tbps). The activity, the web infrastructure and security company said, originated from a DDoS botnet-for-hire known as AISURU, which has been linked to a number of hyper-volumetric DDoS attacks over the past year. The attack lasted for 69

Impact

Not specified

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

Implement DDoS mitigation strategies, enhance network security protocols, and monitor for unusual traffic patterns.

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.

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