San Francisco: Activists claimed to have seized control of nearly 300 Facebook community groups in a self-proclaimed effort to expose how vulnerable online reputations are to tampering.
A contingent that identified itself as Control Your Info (CYI) claimed credit for commandeering 289 Facebook Groups, saying it was simple to get into poorly protected administrative settings at the website.
"This is just one example that really shows the vulnerabilities of social media," said a blog post at controlyour.info.
"If you chose to express yourself on the Internet, make sure the expressions are your own and not a spammers. This isn`t some kind of scare tactic, nor is it a hack, it`s a feature that can be used, and is being used, in bad ways."
CYI claimed its motives were pure and that the move was more of a "take-over" than a computer hack of Facebook groups.
Facebook Groups are themed chat venues that users of the social networking service can join to socialise online with people who share interests.
"Facebook Groups suffer from a major flaw," said a message on the CYI blog.
"If an administrator of a group leaves, anyone can register as a new admin. So, in order to take control of a Facebook group, all you really have to do is a quick search on Google."