Spam Botnets Are Declining, But Likely Not For Long

The size and volume of spam botnets are down over the last
year, and much of this can be attributed to the effectiveness of IP-based blacklists. However,
this defense method is no panacea as scammers have found new methods like reputation
hijacking to circumvent these roadblocks, and bots continue to extend their
reach by piggybacking on existing worms and viruses.

M86: Email Spam Down; Third Party Phishing and Exploit Kits Up

Email users may have experienced a serious decline in spam
over the past couple months, however, a Web security trends report by M86 Security released today at RSA in San Francisco says cybercriminals are coming
up with new and innovative methods of phishing as well as producing increasingly
robust and complicated exploit kits.

FBI Arrests Alleged Head of Mega-D Botnet Operation

The FBI has arrested the man that they allege is behind the notorious Mega-D botnet, which at one point accounted for nearly a third of all of the spam on the Internet. The arrest came to light this week after the man was caught entering the U.S. last month on his way to a car show.

Botnets – apart from inundating out inboxes with spam – can also be
used for ulterior purposes such as executing DDoS attacks or hosting
websites, so understanding the “modus operandi” and size behind the
well-known names is a good idea; Here’s a top ten botnet list. Read the full article. [Help Net Security]

Subscribe to our newsletter, Threatpost Today!

Get the latest breaking news delivered daily to your inbox.