If you thought you noticed a sharp drop in spam recently, you weren’t mistaken. When hosting service McColo was shut down, some big spam botnets found themselves without a home. But it’s set to creep back up again as the Srizbi botnet has found a new home.
The Washington Post, whose investigation helped take down McColo, says part of the Trojan that’s infected the slave computers in the Srizbi botnet includes a formula that will generate a random but unique URL in the event of a network shutdown, so they can check for updates.
