Gcore
October 1, 2025
•[ DDoS attack, botnet, volumetric flood ]
Technology site CDR.cz and an underlying TechRadar report describe how gaming hosting and cloud provider Gcore was hit in October 2025 by one of the largest DDoS attacks ever recorded, a so called short burst volumetric flood that generated roughly 6 terabits per second of traffic and about 5.3 billion packets per second over 30 to 45 seconds. Analysis attributed the event to the AISURU botnet, with more than half of the malicious traffic sourced from Brazil and about a quarter from the United States, suggesting widespread abuse of poorly secured systems in those regions. Gcore stated that its globally distributed DDoS protection network, with over 210 points of presence and more than 200 terabits per second of filtering capacity, absorbed the attack and kept services online, but security experts warned that such brief, intense
