Last year saw a surge in DDoS attacks, driven by new automated attack capabilities along with increased scale and frequency according to a new report from Gcore. Attack volumes surged to 12 Tbps in Q4 of 2025, representing a sixfold increase and highlighting unprecedented growth in attack capabilities.
The study shows that 75 percent of network-layer attacks lasted less than a minute, while application-layer attacks showed a shift toward longer durations. Only two percent of attacks extended beyond ten minutes, indicating a continued shift toward highly intense, short-lived bursts designed to overwhelm targets quickly before mitigation measures fully engage.
Andrey Slastenov, head of security at Gcore, says, ‘‘The latest Radar report is a call to action for business across industries. Attacks are becoming more frequent and more sophisticated because organising them is now cheaper and easier than ever. Businesses and organisations that previously felt unaffected are now being targeted. Effective protection strategies do exist, but understanding what is happening and being prepared has never been more important.’’
Technology remains the most targeted sector, accounting for 34 percent of attacks, followed by financial services (20 percent) and gaming (19 percent). These sectors are favourite targets because in these industries service availability is critical, and disruption can generate immediate operational or financial impact. The continued growth of attacks targeting the technology sector reflects its key role in today’s digital economy.
Geographically the focus is on the Americas with with Mexico accounting for 31 percent of network-layer observed traffic, followed by Brazil (24 percent) and the United States (20 percent). The US remains prevalent for application layer attacks as well, at 23 percent representation. The likely culprit for the American dominance of network-layer attacks is the AISURU botnet, which disproportionately affects networks and device ecosystems in these countries.
The full report is available from the Gcore site.
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