The Rock Phish gang -- one of the net's most notorious phishing outfits -- has teamed up with another criminal heavyweight called Asprox in overhauling its network with state-of-the-art technology, according to researchers from RSA. Over the past five months, Rock Phishers have painstakingly refurbished their infrastructure, introducing several sophisticated crimeware packages that get silently installed on the PCs of its victims.