Gcore successfully stops 6 Tbps DDoS attack

Gcore recently detected and mitigated one of the most powerful distributed denial-of-service (DDoS) attacks of the year, peaking at 6 Tbps and 5.3 billion packets per second (Bpps).

This surge, linked to the AISURU botnet, reflects a growing trend of large-scale attacks. It reminds us how crucial effective protection has become for companies that depend on high availability and low latency.

 

The attack in numbers

• Peak traffic: 6 Tbps
• Packet rate: 5.3 Bpps
• Main protocol: UDP, typical of volumetric floods designed to overwhelm bandwidth
• Geographic concentration: 51% of sources originated in Brazil and 23.7% in the US, together accounting for nearly 75% of all traffic

This regional concentration shows how today’s botnets are expanding across areas with high device connectivity and weaker security measures, creating an ideal environment for mass exploitation.

How to strengthen your defenses

The 6 Tbps attack is not an isolated incident. It marks an escalation in DDoS activity across industries where performance and availability are critical to customer satisfaction and company revenue. To protect your business from large-scale DDoS attacks, consider the following key strategies:

• Adopt an adaptive DDoS protection that detects and mitigates attacks automatically.
• Leverage edge infrastructure to absorb malicious traffic closer to its source.
• Prepare for high traffic volumes by upgrading your infrastructure or partnering with a reliable DDoS protection provider that has the global capacity and resources to keep your services online during large-scale attacks.

Keeping your business safe with Gcore

To stay ahead of these evolving threats, companies need solutions that deliver real-time detection, intelligent mitigation, and global reach. Gcore’s DDoS Protection was built to do precisely that, leveraging AI-driven traffic analysis and worldwide network capacity to block attacks before they impact your users.

As attacks grow larger and more complex, staying resilient means being prepared. With the right protection in place, your customers will never know an attack happened in the first place.

Learn more about 2025 cyberattack trends