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Facebook users targeted by 'Dislike' button scam

Downloading button installs rogue apps

Facebook users are being warned against a scam that offers the chance to install a 'dislike' button on their profiles.

The 'like' button currently available on the social network allows users to rate status updates and wall posts as well as comments on a profile. However, a 'dislike' button does not yet exist, despite a number of campaigns by Facebook users.

According to security firm Sophos, social networkers that follow a link entitled 'Download the official DISLIKE button now' are actually being tricked into downloading malicious software that will post spam messages on their Facebook page.

The software also attempts to convince Facebook users to fill in an online survey, which earns hackers money.

"One thing we commonly see is that the message starts 'OMG, shocking video'," Graham Cluley from Sophos told the BBC.

"And they appear to come from your Facebook friend, giving it a ringing endorsement."

Facebook said it always encourage people not to "click on links that appear suspicious - even if posted from a friend".

"They [Facebook users] can report any posts to us. We can make sure that we take down any application or all of the links across Facebook," the social network said in regard to rogue apps.

However, Cluley said Facebook should police the development of rogue applications more closely.

"Anyone can write a Facebook app - these scams are constantly springing up," he said.

See also: Facebook fixes email notification problem

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