In October 2016, a major domain name system (DNS) service in the United States was hit by a very sophisticated and complex distributed denial of service (DDoS) attack that clogged its servers with malicious requests from tens of millions of IP addresses. The attack caused major disruptions and outages for internet heavyweights such as Twitter, Netflix, Spotify and Reddit.
Of course, there had been many DDoS attacks before and organizations had long put in place defenses against them. But the October 2016 attack was different. It was caused by malware called Mirai which took advantage of the vulnerable security of devices connected to the internet – the so-called Internet of Things (IoT). In the case of the October 2016 attack, the majority of the devices used were reported to be CCTV cameras.