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DDoS Threat Report 2016 Q3

In Q3 2016, reflection-based DDoS attacks decreased, while botnets picked up more headlines. The quarter did, however, see a few notable DDoS attacks that made international news: one targeting Brian Krebs, a journalist covering the cybercrime beat, and another hitting OVH, an Internet hosting provider. Both attacks utilized botnets, which isn’t rare, although the speeds with which they were launched were unprecedented for botnets. A branch of the jgamblins github containing the source code can be seen here: https://github.com/kingtuna/Mirai-Source- Code. The botnet (Mirai) consisted of systems that were on-boarded via telnet password cracking in a process that the coder described as a real-time load. It’s interesting that the botnet used GOLang to control the environment (we switched over C for our service emulation).

Overall, the quarter was characterized by a daily downtick in the average number(1269) of reflection-based DDoS attacks, a decrease on nearly 40%.




Q3 2016 said goodbye to UnrealTournament- and Sentinel-based attacks, although the number of attacks for both services was pretty small to begin with. Just as in Q2, NTP continued to reign supreme as the go-to tool for Q3 DDoS attacks in Asia. During the quarter NTP accounted for 90% of all reflective attacks — well above the global average of 66%. Chargen — NTP’s nearest “competitor” — accounted for only 6% of attacks.

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