A new application has begun spreading on Facebook which has found an exploit in the existing sharing system. Thousands of users have seen the message spreading to their profiles in the past hour or so. The message typically resembles the following one: “In order to PREVENT SPAM, I ask that you VERIFY YOUR ACCOUNT” If your anti-virus software failed to block the intrusion, then you could be spamming your friends with the scammer’s message. You should clean-up your newsfeed and profile to remove references to the scam.
Source: https://thehackernews.com/2011/05/new-facebook-worm-propagating-verify-my.html