Facebook has also blocked many malicious URLs on the websites which gave some better results. But this is not the perfect solution. So Facebook has not adopted a better URL blacklist system with the inclusion of links from five major security software vendors, Microsoft, McAfee, TrendMicro, Sophos and Symantec.
Facebook is also offering free Antivirus solution from these vendors for free. Look at the new Facebook Antivirus Marketplace. The AV Marketplace enables people to download six-month licenses to full versions of antivirus software at no charge
