What You Should Know About DDoS Incident Response

August 27, 2019

This document addresses the overall strategy and process for DDoS incident response and provides detailed analysis of and countermeasures against some typical attacks, in a bid to help organizations respond to DDoS attacks more effectively and efficiently. Therefore, we will not dwell upon specific methods of and configurations of specific mitigations against each type of DDoS attack. (more…)

DDoS to Loom Large in the 5G Era

July 9, 2019

Today, 5G is around the corner and, in the foreseeable future, it will definitely bring more convenience to our lives. Higher rates of mobile terminals, more devices connected to the Internet of Things (IoT), more convenient remote services… All these will lead us to a brand new era of the Internet of Everything (IoE). With constant breakthroughs in technological innovation, cybersecurity should also move at the same rate. (more…)

DDoS in the Past Decade

July 1, 2019

1.0   Milestones 1.1   DDoS Size Expansion IP data source: The Zettabyte Era: Trends and Analysis The past decade has witnessed a steady growth in the peak size of DDoS attacks, especially in 2013 when the reflection method was used by attackers on a large scale and the DDoS attack size expanded at an exponential rate. […]

A Retrospective Analysis of 300G DDoS Mitigation Powered by NSFOCUS Cloud DPS

May 21, 2019

The NSFOCUS multi-terabit DDoS protection was designed specifically to help enterprises regain control and build confidence with its vigorous layered protections against sophisticated attacks. With automation as an integral part of the NSFOCUS solution, DDoS attacks are detected and remediated immediately, with no disruption to services. (more…)

Traceback of a DDoS Attack

January 1, 2018

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 […]

Doing It Better

January 21, 2016

Track:  Technical

Author: Stephen Gates, Chief Research Intelligence Analyst, NSFOCUS


Flying at 40,000 feet above the ground always gives one a sense of clarity.  Looking down on the world from such a height can make a person feel somewhat insignificant.  However, my trip today is very noteworthy.  I will be landing in Las Vegas in a few hours and the next four days will be filled with excitement, entertainment, and education.  I am not going to Vegas for the adult playground activities like many of my fellow passengers.  I am going there to attend the most exciting event of my career; the 2016 Sales Kickoff for a widely-unknown company in the U.S. called NSFOCUS IB. (more…)

Anatomy of an attack: network bandwidth exhaustion

January 5, 2016

Track:  Technical

Author: Vann Abernethy, Field CTO, NSFOCUS

notebook-1071777_1920DDoS attacks come in three basic flavors:  network-layer, application-layer and a hybrid of the two.  This is a somewhat simplistic view but when you look at the strategy for taking someone down via DDoS, the two primary vehicles are either exhaustion of available network bandwidth or the overwhelming of back-end processing power (which can be directed either at the server system itself or the applications residing on them).  The most efficient approach to take down a target will depend on the target itself.  This is why it is important for every company to consider all of the assets that could become targets when designing anti-DDoS protection.  (more…)

DDoS attacks – more than just disruption?

December 21, 2015

Track:  General Security

Author: Vann Abernethy, Field CTO, NSFOCUS

DDoS attacks

Distributed Denial-of-Service (DDoS) attacks have been around for decades and have been increasing in popularity due to the relative ease in carrying one out.  Traditionally, the purpose of these attacks has been to make a site or service unavailable to its intended users for some duration via either flood-type attacks or application-layer attacks (which are smaller, but just as effective) that overwhelm the target’s network or systems. (more…)

Anatomy of an attack – DNS amplification

December 14, 2015

Track:  Technical

Author: Vann Abernethy, Field CTO, NSFOCUS

binary-823342_1920DNS amplification attacks ramp up the power of a botnet when targeting a victim.  The basic technique of a DNS amplification attack is to spoof the IP of the intended target and send a request for a large DNS zone file to any number of open recursive DNS servers.  The DNS servers blindly respond to the request, sending the large DNS zone response to the attack target.  (more…)

Modern DDoS attacks: When Moore’s law meets Darwin’s Theory of Evolution

December 4, 2015

Track:  General Security

Author: Dave Martin, Director of Product Marketing, NSFOCUS

DDoS attacks

What would happen if you combined Moore’s law with Darwin’s Theory of Evolution and applied them to DDoS attacks?  Unfortunately, modern DDoS attacks seem to embody this idea perfectly as both the frequency and complexity of these attacks have become truly staggering in just a short amount of time.