- Microsoft repelled a record 15.72 Tbps DDoS attack from the Aisuru botnet
- Aisuru, a Mirai-class IoT botnet, controls 300,000+ compromised devices
- Microsoft warns that DDoS attacks will grow as IoT and internet speeds scale
Microsoft has said it has successfully mitigated “the largest DDoS attack ever observed in the cloud” after cybercriminals running the Aisuru botnet targeted a single endpoint in Australia.
The attack was a sight to behold: more than 500,000 source IPs, across different regions, descended on the endpoint and delivered a multi-vector Distributed Denial of Service (DDoS) attack that measured 15.72 Tbps and nearly 3.64 billion packets per second (pps).
The majority of assimilated units are in private ISPs in the United States. According to CyberInsiderit now counts more than 300,000 compromised devices.
Remedy of the assault
Microsoft described Aisuru as a “Turbo Mirai-class IoT botnet that frequently causes record-breaking DDoS attacks”.
Mirai is one of the largest, most popular botnets out there that has lingered for nearly a decade, usually working by infecting IoT and smart home devices, such as home routers, DVRs, webcams, smart speakers, TVs, and others, and then using their Internet access to flood their targets with meaningless traffic.
Although the attack was considered massive, Microsoft said it managed to mitigate it using Azure’s globally distributed DDoS Protection infrastructure and continuous detection capabilities.
“Malicious traffic was effectively filtered and redirected, maintaining uninterrupted service availability for customer workloads,” the company said.
Aisuru has been making headlines recently, with game hosting provider Gcore recently hit by what was at the time one of the largest DDoS attacks ever recorded.
Gcore said the event was a “short-burst volumetric flood” lasting between 30 and 45 seconds, peaking at 6 Tbps with 5.3 billion packets per second.
Gcore’s analysis revealed that 51% of the malicious data originated from Brazil and almost 24% came from the United States, and that the activity was consistent with Aisuru.
Microsoft doesn’t think we’ve seen the worst DDoS attacks yet. “Attackers are scaling with the Internet itself,” the report reads. “As fiber-to-the-home speeds increase and IoT devices become more powerful, the attack size baseline continues to increase.”
Via Bleeping Computer
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