Facebook says that over 500 million users world-wide are connected through its service and over 70% of the users are outside the United States.
With an online population like that, trouble is bound to happen.
So, what can you do? When online, always play it safe. If it's too good to be true, don't click on a link. Even if its for a FREE iPad, or a spicy hidden video of Britney Spears. Yuk.
Facebook offers some specific advice on the subject as well:
ClickjackingIt's a jungle out there in the online world. Be smart and practice Safe Computing!
Certain malicious websites contain code that can make your browser take action without your knowledge or consent. Clicking on a link on one of these websites might cause the website to be posted to your Facebook profile, for example. Don't click on strange links, even if they're from friends, and notify the person if you see something suspicious.
For more information about Facebook Security, visit their Security page at http://www.facebook.com/security
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