Facebook teams with security outfits to blacklist malicious URLs

As it closes in on 1 billion users, Facebook has formed partnerships with five security software outfits to crack down on pfishing schemes. Facebook said that Microsoft, McAfee, Trend Micro, Sophos and Symantec will join the fight to keep its users from sharing links to sites that install malware. Facebook also has its own tools in its arsenal and a vast database of malicious URLs.