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Sturdier Botnets Mean More Spam In 2007: Page 3 of 3

"The next generation of ransomware could be much more sophisticated," says Wood. All criminals need to do, he says, is increase the strength of the encryption, which would make it much more difficult -- and possibly impossible -- for security researchers to break the key, as they've done in the past.

With the upcoming year looking treacherous, Wood had little hope for an end to the spam battle.

"We can't make the problem go away altogether," he says. "Even the best defense can only be so effective."