Since we saw the first Sober worm back in October 2003, its...

Since we saw the first Sober worm back in October 2003, its author has tried to improve upon tried-and-tested tricks to dupe computer users into launching infected attachments. This latest worm purports to be a warning from CIA and FBI agents, accusing recipients of visiting illegal websites. Mocking the feds is a sure-fire way of goading the authorities, and you can't help but wonder whether the author is desperate to be caught.