<p>SAN FRANCISCO/LOS ANGELES (Reuters) - Facebook Inc said on Friday hackers had infiltrated some of its employees' laptops in recent weeks, making the world's No.1 social network the latest victim of a wave of cyber attacks, many of which have been traced to China.</p><p>It said none of its users' data was compromised in the attack, which occurred after a handful of employees visited a website last month that infected their machines with so-called malware, according to a post on Facebook's official blog released just before the three-day U.S. President's Day weekend.</p><p>"As soon as we discovered the presence of the malware, we remediated all infected machines, informed law enforcement, and began a significant investigation that continues to this day," Facebook said.</p><p>It was not immediately clear why Facebook waited until now to announce the incident. Facebook declined to comment on the reason or the origin of the attack.</p><p><a href="http://www.reuters.com/article/2013/02/16/net-us-usa-social-facebook-idUSBRE91E16O20130216">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.huffingtonpost.com/2013/02/16/hack-facebook_n_2697761.html">Hack Gives Facebook A Look At The Darker Side Of &#039;The Hacker Way&#039;</a> (Huffington Post)</p><p><a href="http://abcnews.go.com/Technology/facebook-hacked-month-user-data-compromised/story?id=18515870">Facebook Hacked; No User Data Compromised</a> (ABC News)</p><p><a href="http://bits.blogs.nytimes.com/2013/02/15/facebook-admits-it-was-hacked/">Facebook Says Hackers Breached Its Computers</a> (New York Times (blog))</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dslMPays_wR1XmM9mJ7TEbadte9oM&ned=us">131 additional articles.</a></p>