Category Archives: DDoS

2016 Security Predictions

The stream of massive data breaches continued in 2015. It seems that no sector was immune to hacking: banks, government, dating sites, healthcare, ISPs, and even security companies were compromised. Anywhere there was sensitive data hackers were trying to obtain it, and in many cases they succeeded. However, hacking is not entirely without risks, and […]

Cloudmark’s 2014 Annual Security Threat Report

It’s been a hot year for messaging security. In our 2014 Annual Security Threat Report we take a look at, among many other topics, findings of DNS resource exhaustion/water boarding at a major ISP, a deeper look at the highest volume spam campaign to reach Apple iMessage users to date, and delve into the a […]

A DNS cache-busting technique for DDOS-style attacks against Authoritative Name Servers

During the course of a recent analysis of DNS traffic at a customer site, I noticed a high volume of requests had been made for a relatively small set of domains. As it turned out, the traffic was part of an attack on the customer’s DNS infrastructure; however, the point of these requests was initially […]

DNS Gang Wars of the Wild Wild East

What does running the DNS infrastructure of a major ISP have in common with operating an online gambling site based in China? If you are running DNS operations of any scale then you are almost certainly participating in a world wide racketeering campaign specifically targeting online gambling sites, many of which operate out of China […]

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