The latest PhatBot bumps the latest Netsky which ripped out the latest Bagle which replaced the current MyDoom. And they’re all churning out new code, along with oceans of spam… almost daily.

Mike Kelly of SecurityFocus writes: “Worms are crawling on top of worms, eating out holes in Microsoft’s dominant operating systems like a giant piece of swiss cheese in front of thousands of tiny, malicious rats. I do not know to what extent Microsoft’s code is scrutinized through an exhaustive security audit, but two years after Bill Gates’ long-heralded announcement the holes in the cheese are larger than they’ve ever been.”

Meanwhile, the watchers at BrightMail note that since Feb 2003, spam has slithered up from 45% of the mailstream to 62%. We’re witnessing a feeding frenzy.

But you gotta admire that productivity.