Cloudflare Mitigates Record 29.7 Tbps DDoS Attack – the Largest Documented Cyber Assault to Date
Cloudflare telemetry data and external analysis confirm a record-breaking DDoS attack peaking at 29.7 terabits per second and 14.1 billion packets per second (Bpps) — the most powerful incident publicly documented to date.
The attack used UDP carpet-bombing, distributing massive volumes of traffic across thousands of IPs and ports to bypass traditional DDoS filtering.
Although lasting only ~69 seconds, an event of this magnitude can disrupt or overwhelm unprotected services.
Aisuru: The Botnet Behind the Attack
Investigators attribute the attack to the Aisuru botnet, comprising 1–4 million infected IoT devices, routers and Linux-based systems.
Aisuru has been a major driver of the sharp rise in DDoS activity throughout 2025, contributing to multiple high-intensity incidents globally.
Why this matters
confirms a shift toward hyper-volumetric DDoS (Tbps + Bpps);
highlights that duration is no longer a primary risk factor — seconds are enough;
affects telecoms, cloud providers, financial institutions, SaaS, e-commerce and public-sector systems;
stresses the need for built-in resilience, not only external DDoS filtration.
DIAMATIX Perspective
To withstand attacks of this scale, organizations need:
Shield SIEM/XDR for cross-layer correlation and anomaly detection;
MDR 360° ensuring 24/7 visibility and rapid response;
resilient architecture: redundant DNS, geo-distribution, multiple cloud paths, automated failover;
periodic stress-testing and DDoS readiness exercises.
In 2025, resilience is becoming a core business requirement — not a technical luxury.
Sources
TheHackerNews
CybersecurityDive
Cloudflare DDoS Threat Report (Q3 2025)
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