Social networkers of the world, it's time to amp up your security software and put on your cynical cap before clicking on friend requests and links to "funny videos." Facebook and Twitter will be the top targets for cyber attacks in 2010, according to several security firms.

Networks like Facebook are a gold mine of information for identity theft scams. You may have stumbled upon a cyberattack or two before on Facebook. It's usually an inbox message from someone you don't talk to often, with the message: "Hey is this you in this video? LOLZ!!!" followed by a strange link with random letters in it.

Click on the link, and it can take you to a site that downloads a program designed to steal your personal data and spread the malicious link to your Facebook connections, without your knowing it. The Koobface worm was one such program. In 2009, the CA Internet Security Business Unit found more than 100 mutated strains of it.

But it's more than just inbox links. It can be a friend request from a fake account, or an invitation to an event that takes you to a page that looks like a Facebook event, but instead takes you to a page to download something.

Dave Marcus, director of security research and communications at McAfee, also has seen sites with advertisements for fake products that steal your credit card information when you think you're buying something.

Those who recognize fakes are in the small minority of users, Marcus said. On social networks, people are more trusting of links and get click-happy.