The DNSpionage attack group is now using a new backdoor called Karkoff, which may have ties to the OilRig leaks as well.
A group of attackers has been running a DNS hijacking campaign known as Sea Turtle that targets energy, intelligence, and military organizations.
A series of DNS-hijacking campaigns against government agencies and other organizations has led ICANN to call for full deployment of DNSSEC and other protective measures.
In this illustrated Hacker History video, security researcher Dan Kaminsky goes back to 2008 and describes how he found the vulnerability in DNS and almost broke the Internet. Unfortunately, DNS still needs to be fixed.