The Resurgence of Snowshoe Spam
Global spam problems have significantly increased during the first quarter of 2010, with a rise in snowshoe spam and an exponential growth in Botnet spam distribution.
Snowshoe spam, which rose dramatically during the final quarter of 2009, before tapering off in January, is now experiencing resurgence. Snowshoe spam is identified as a central point of spam origin, using a wide variety of IP addresses to cloak the span. These addresses are typically within a /24 range but may encompass much larger address blocks. In this type of operation the spam is spewed from a network, rapidly spanning through the IP addresses within the network, emitting spam in a wide footprint. The intent is to make the technique more efficient and more difficult to identify. Read more…