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Aisuru Botnet Turns Was a Terabit-Scale Internet Stress Test
The Aisuru botnet launched over 1,300 DDoS attacks in Q3 2025, with a 54% increase in attacks quarter-over-quarter, targeting critical industries globally.
- Wednesday, Cloudflare said it mitigated a record 29.7 Tbps distributed denial-of-service attack from the Aisuru botnet that lasted 69 seconds.
- Aisuru is a botnet‑for‑hire built from compromised routers and IoT devices, with Cloudflare estimating it controls between one and four million infected hosts.
- Security firms found attackers used UDP carpet‑bombing to send garbage traffic to 15,000 destination ports per second, with Microsoft reporting a related 15.72 Tbps, 3.64 billion pps cloud attack.
- Aisuru targeted telecommunications, financial services, hosting providers and gaming companies, and Cloudflare warns its traffic can disrupt ISPs even if not directly aimed.
- Cloudflare reported mitigating 8.3 million DDoS attacks in Q3, with 2,867 mitigated Aisuru attacks and 1,304 hyper-volumetric incidents this year, straining defender resources.
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Total News Sources20
Leaning Left1Leaning Right0Center4Last UpdatedBias Distribution80% Center
Bias Distribution
- 80% of the sources are Center
80% Center
L 20%
C 80%
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