Facebook says there is no connection to Locky, but researchers disagree. Ransomware known as Locky encrypts files on a computer and demands money in exchange for the decryption key. Facebook says it has found no evidence Locky has been successfully spread through Messenger. Facebook and Check Point security firm says LinkedIn is vulnerable to the same kind of attack that hit Facebook. Check Point says it’s waiting for Facebook and LinkedIn to adjust their defenses before providing more technical detail about the attack on LinkedIn.”]
Source: https://www.bankinfosecurity.com/ransomware-creeping-into-facebook-linkedin-a-9566