OSX/Tsunami-A, a new backdoor Trojan horse for Mac OS X, has been discovered. It appears to be a port of Troj/Kaiten, a Linux Trojan horse that listens to an IRC channel for further instructions. Tsunami is not just a DDoS tool though, it can be used to remotely access an affected computer. It can also be used in DDoS attacks, such as flooding a website with traffic. The name Tunami comes from the name tsunami”]
Source: https://grahamcluley.com/tsunami-backdoor-trojan-for-mac-os-x-discovered/