Microsoft Thwarts Record-Breaking 15.72 Tbps DDoS Attack Orchestrated by AISURU Botnet
In November 2025, Microsoft successfully detected and mitigated an unprecedented Distributed Denial-of-Service (DDoS) attack that peaked at 15.72 Tbps, targeting a cloud endpoint in Australia. The attack, orchestrated by the AISURU botnet leveraging TurboMirai-class malware, generated nearly 3.64 billion packets per second. Advanced protections within Microsoft's Azure platform automatically neutralized the threat before it could affect customer availability or data. Microsoft attributed the attack to highly automated botnets leveraging compromised IoT devices and observed a rapid, multi-vector assault designed to test cloud resilience and incident response. This record-breaking event highlights the escalating scale and sophistication of DDoS activity targeting foundational cloud infrastructure. As attackers exploit larger IoT botnets and novel malware strains, defenders face mounting pressure to evolve detection and mitigation at cloud-scale. Organizations must increasingly invest in robust DDoS protection and continuously monitor for emerging threats.
Kill Chain