It turns out that his port scanner, ShieldsUp, can easily be directed at arbitrary IP addresses while returning the scan results to the initial user. Thus the tool would become an effective proxy for performing anonymous port scans. Even better, if such an attack were scripted, it would be possible to tie up a Web site with a torrent of Gibson's mighty NanoProbes. Damn, I really was fond of his service. Anyway you can check Mr. Gibsons website here. To read the full story head on over to the source below. Source: The Register