Microsoft has disclosed the mitigation of the largest Distributed Denial-of-Service (DDoS) attack in history, peaking at an unprecedented 15.72 Terabits per second (Tbps). The attack targeted a single customer in Australia and was launched by a new, highly aggressive IoT botnet named “AISURU.”
Business Impact
This event redefines the upper limit of volumetric attacks. The sheer scale (nearly 16 Tbps) is capable of overwhelming not just individual corporate networks, but entire regional internet infrastructures. It highlights the immense, growing power of compromised IoT botnets.
Why It Happened
The AISURU botnet leverages hundreds of thousands of compromised IoT devices (cameras, routers) to generate massive UDP floods. Attackers are continuously scaling their capabilities as consumer fiber speeds increase and IoT devices become more powerful.
Recommended Executive Action
Verify that your organization’s DDoS mitigation provider (e.g., Cloudflare, Akamai, Azure) has the capacity to handle terabit-scale attacks. Standard on-premise appliances are no longer sufficient against threats of this magnitude.
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