NSFOCUS Cloud DDoS Protection Service (Cloud DPS) Detected and Mitigated an 800G+ DDoS Attack towards a Critical Infrastructure Operator
November 17, 2025
Incident Summary On October 21, 2025, NSFOCUS Cloud DDoS Protection Service (Cloud DPS) detected and mitigated an 800G+ DDoS attack towards a critical infrastructure operator. The target network sustained a multi-vector volumetric DDoS attack peaking at 843.4 Gbps and 73.6 Mpps. The assault combined UDP-based floods (dominant) with amplification and reflection techniques. NSFOCUS Cloud DPS […]
US Officials Claim to Have Gained Control of the RapperBot
August 22, 2025
Overview Recently, US officials claimed to have successfully gained control of RapperBot, effectively curbing this powerful source of DDoS attacks. The operation pinpointed the key figure behind the botnet, Ethan Foltz. According to the investigation, Foltz has been developing and operating RapperBot since 2021, with his residence in Eugene, Oregon, USA. Since its activity, the […]
NSFOCUS Releases 2024 Global DDoS Landscape Report
June 9, 2025
SANTA CLARA, Calif., June 9, 2025 – NSFOCUS, a global leader in cybersecurity solutions, announced the release of its annual report, the 2024 Global DDoS Landscape Report. The full report is packed with in-depth analysis and insights that can help organizations better understand the DDoS threat environment and formulate more effective countermeasures. Highlights of the […]
Reflective and Short-burst DDoS Attacks Harnessed to Knock Down the Targets in Ukraine
February 25, 2022
Background Since 2022, the relationship between Russia and Ukraine has become increasingly tense. The two sides are at loggerheads and have deployed a large number of military personnel and equipment in the border areas of the two countries. However, since entering the 21st century, war is not limited to armed actions, but happens in other […]
DDoS Attacks Have Entered Terabit Era
January 29, 2022
MILPITAS, Calif. – January 28, 2022 – NSFOCUS, a leader in holistic hybrid security solutions, today released the 2021 Global DDoS Attack Landscape, a joint report by working with Tencent, which found that DDoS attacks have entered the terabit era with the largest DDoS traffic peaked at 2.4 Tbps (or 3.25 Tbps according the latest news […]
Amplification DDoS Attacks Come Again
February 26, 2021
Just in February, another two amplification DDoS attacks caught our attention. They are respectively abusing Plex Media Servers and Powerhouse VPN servers to amplify junk traffic to victims. Abuse Plex Media Server for Amplification Attacks On 3rd February, according to ZDNet, DDoS-for-hire services have found a way to abuse Plex Media servers to bounce junk […]
Design of Protection Against HTTPS-Targeted DDoS Attacks
July 14, 2020
As more and more Internet business is switched to the encrypted HTTPS from the plaintext HTTP, distributed denial of service (DDoS) attacks against HTTPS are also on the rise, including attacks targeting the SSL/TLS handshake and HTTPS services. Protecting against HTTPS-targeted DDoS attacks has always been a hard nut to crack within the industry. This document describes the working principle and harm of this kind of attacks as well as the protection design and practices.
(more…)DDoS Attack Landscape 7
May 13, 2020
Attack Gang Size
Gang Size
Figure 3-27 shows the distribution of our identified IP gangs by size. Two gangs consist of over 10,000 members and the largest gang has 88,000 members.
How NSFOCUS ADS KO’s DDoS Attacks
November 18, 2019
What Is DDoS? Look at the following example: Assume that you run a shop that is doing well. At this time, your neighbor, Mr. Wang (or whatever his name is), whose business is slack, looks at you as an eyesore. Therefore, he hires a group of hooligans. Then you find that your shop is crowded […]
Have Rich Game Customers Who Suffered DDoS Attacks Turned to You?
July 15, 2019
According to NSFOCUS 2018 DDoS Attack Trend Report, the gaming sector has become the second biggest victim of DDoS attacks, receiving 27.6% of the total number of attacks. (more…)
