Back in November there was a considerable drop in Spam when Spam friendly ISP McColo was cut off from the Internet by it’s upstream peer. Srizbi worm was pretty smart though and was picking up again by the end of November. Later in the year the botnets were somewhat neutralised leading to a huge drop […]
Tag Archive | "srizbi"
After McColo was partially disconnected from the Internet by it’s peers global spam dropped noticeably. It seems however that the spam was emanating from a zombie network and the control servers were hosted by McColo, the creators of the botnet (Srizbi) were smart about it though and built a fail-safe system into the the malware. […]