A new record-breaking 29.7 Tbps distributed denial-of-service (DDoS) attack launched via the Aisuru botnet has set a new standard for internet disruption and reinforced that multi-terabit attacks are on track to soon be an everyday event for DDoS defenders. According to Cloudflare’s latest DDoS threats report, Aisuru launched an intense hyper-volumetric DDoS on a network layer with traffic that reached 29.7 Tbps and 14.1 billion packets per second, reaching new heights beyond previous records that topped 22 Tbps.
The DDoS attack employed a UDP ‘carpet bombing’ technique that targeted 15,000 destination ports every second with random packet components constantly varying so as not to get filtered out at traditional scrubbing centers. Despite these efforts, Cloudflare reports that Aisuru traffic took mere seconds for an autonomous mitigation system to identify and remove.
Behind the incident is a botnet Cloudflare now estimates at 1 million to 4 million compromised devices, making Aisuru the biggest DDoS botnet in active circulation. Since the start of 2025, Cloudflare has mitigated 2,867 Aisuru incidents, with 1,304 hyper-volumetric attacks in the third quarter alone – a 54% quarter-over-quarter increase that equates to about 14 mega-events a day. S
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