In March, 1999, an email worm named Melissa caused havoc across the Internet. I can recall hearing stories of people unplugging their mail servers because they couldn’t deal with the flood of email messages Melissa generated. Then, in 2001, two worms—Code Red and Nimda—generated so much traffic that some people disconnected their networks from the Internet in order to cope. In January, 2003, the Slammer worm caused so much traffic that it even took down banks’ ATM machines. Even though these worms all caused a lot of headaches and created headlines worldwide, with the exception of Nimda, none of them really did much other than spread.
Since Slammer, I can’t recall any other worms causing so much traffic that they’ve affected bandwidth across the Internet. Why is this? Well, I would say there are a few reasons. First and foremost, I think this change can be summed up in one word: money.
As we reported in the latest edition of the Symantec...