It looks like you can add another big name to the recent string of high-profile hacking attempts. Facebook announced in a blog post today that it discovered last month that it had been targeted in what's being described as a "sophisticated attack," which it says "occurred when a handful of employees visited a mobile developer website that was compromised." Facebook further pinpoints the attack to a previously unseen zero-day exploit that bypassed the Java sandbox and installed malware on the computers in question. The company goes on to note that it immediately notified Oracle of the exploit, which issued a patch on February 1st.
Facebook is also quick to point out that it has "found no evidence that Facebook user data was compromised," and adds that it was not alone in the attack, noting that it began to share information about the hack with other companies and entities as soon as it discovered it, and that it continues to work with law enforcement and others affected by the attack. You can find its full explanation of the matter at the source link.