Authorities in three countries have taken down a half-dozen command-and-control servers for the Grum botnet. The botnet is responsible for more than 17 percent of the world’s spam, a researcher says. Most of the spam sells fake Rolex watches and Viagra. The amount of spam flowing into people’s inboxes has fallen at least 60 percent since the peak in 2008, he says. Microsoft reported this month seeing spam sent from Android devices spewing from Yahoo email servers.”]
Source: https://www.csoonline.com/article/2131966/authorities-down-servers-of-third-largest-spam-botnet.html