By Michael Kan
Publication Date: 2025-11-17 20:11:00
A powerful botnet has flexed its muscles once again by launching a massive 15.7 Tbps DDoS attack against a customer on Microsoft’s Azure cloud computing service.
The incident occurred on Oct. 24, with Microsoft indicating it involved over 500,000 devices generating internet traffic in an attempt to knock a target offline.
The company traced the DDoS to the “Aisuru” botnet, which was responsible for the largest DDoS on record back in September. That attack peaked at 22.2 Tbps, while also pushing 10.6 billion packets per second from over 300,000 devices. It targeted a customer on Cloudflare, an internet infrastructure company that also provides DDoS protection.
The Oct. 24 attack targeted a single endpoint based in Australia. Microsoft didn’t elaborate, but it looks like the company automatically mitigated the impact, preventing it from overwhelming its services. “Malicious traffic was effectively filtered and redirected, maintaining uninterrupted…
