Dyn and other DNS providers provide a link between the URLs generated by browsers and the corresponding IP addresses, and the DDoS attack involved malicious DNS lookup requests from tens of millions of IP addresses and is believed to involve a botnet coordinated through a large number of Internet of things-enabled (IoT) devices — including cameras, home routers, and baby monitors — that had been infected with the Mirai malware.
Cyber Attack at 11:45 EDT Oct 21st
The US Department of Homeland Security started an investigation into the attacks, according to a White House source. No group of hackers claimed responsibility during or in the immediate aftermath of the attack. Dyn's chief strategist said in an interview that the assaults on the company's servers were very complex and unlike everyday DDoS attacks. Dr. Barbara Simons, a member of the advisory board of the US Election Assistance Commission, said such attacks could affect Internet voting for overseas military or civilians.
Dyn disclosed that, according to Flashpoint and Akamai, the attack was a botnet coordinated through a large number of Internet of things-enabled (IoT) devices, including cameras, home routers, and baby monitors, that had been infected with Mirai malware. Dyn stated that they were receiving malicious requests from tens of millions of IP addresses. Mirai is designed to brute-force the security on an IoT device, allowing it to be controlled remotely. Cybersecurity investigator Brian Krebs noted that the source code for Mirai had been released onto the Internet in an open-source manner some weeks prior, which will make the investigation of the perpetrator more difficult.