DDoS Mitigation

IP Reputation Report-01252019

January 25, 2019 | Adeline Zhang

Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at January 25, 2019. CN increased 1% from 43% to 44% and US stayed at 12% from last week.

IP Reputation Report-01182019

January 18, 2019 | Adeline Zhang

Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at January 18, 2019. CN dropped from 51% to 43% and US increased from 9% to 12% from last week. Top 10 countries in attack percentage: From the diagram […]

IP Reputation Report-01112019

January 11, 2019 | Adeline Zhang

Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at January 11, 2019. Top 10 countries in attack percentage: From the diagram above, we can see the region Palestinian Territory has the biggest percentage of malicious IPs. The […]

IP Reputation Report-01042019

January 4, 2019 | Adeline Zhang

Top 10 c¿ountries: The above diagram shows the top 10 regions with most malicious IP addresses from the NSFOCUS IP Reputation databases at January 04, 2019.

IP Reputation Report-12212018

December 21, 2018 | Adeline Zhang

Top 10 countries: The above diagram shows the top 10 regions with most malicious IP addresses from the NSFOCUS IP Reputation databases at December 21, 2018. But the United States has the largest allocated IP addresses in the world and China is in the second place. So, report IP Reputation as a percentage of total […]

IP Reputation Report-11162018

November 16, 2018 | Adeline Zhang

Top 10 countries: The above diagram shows the top 10 regions with most malicious IP addresses from the NSFOCUS IP Reputation databases in October. But the United States has the largest allocated IP addresses in the world and China is in the second place. So, report IP Reputation as a percentage of total IP addresses […]

Deep Analysis of Memcached Large DRDoS Attacks – China Telecom DamDDoS & NSFOCUS Jointly Released

March 5, 2018 | Adeline Zhang

Recently, many domestic and foreign security companies and agencies issued warnings about the Memcached Distributed Reflection Denial of Service attack, which aroused the concern of all parties. According to our monitoring, the peak traffic for this attack has now reached 1.35T. On Feb. 27, Memcached’s reflection DDoS attacks ranged from hundreds of megabytes to a maximum of […]

Traceback of a DDoS Attack

January 1, 2018 | Adeline Zhang

An abnormal increase in the CPU usage of a telecom carrier’s 4G firewall substantially slowed down the access from some iPhone users to the Apple website. We suspected that the carrier was hit by a DDoS attack. With the visualized traceback function of NSFOCUS Big Data Security Analytics (BSA), we made a drill-down analysis of […]

Phantom Squad – DDoS Threat

September 26, 2017 | Adeline Zhang

Overview It appears that the new syndicate of the Armada Collective referred to as the Phantom Squad is planning to launch a global DDoS attack on September 30th.  Below you will find a screenshot of the mass spear-phishing email that has been distributed to many organization and companies around the world. They are currently asking […]

Does a Dropbear DDoS in the Woods?

February 28, 2017 | Adeline Zhang

Author: Guy Rosefelt – Dir, PM Threat Intelligence & Web Security Recently, NSFOCUS has seen some interesting DDoS behavior.  Since Q4 of last year, there has been a rise in SSL/VPN and SSH based DDoS attacks.  Most people would not equate VPN or SSH as a viable mechanism for what is usually considered a volumetric […]