Facebook holds the line against spammers, scammers

Automated systems are shutting down fake profiles as well as stopping spam

Facebook is shoring up its security protection procedures as the social-networking site increasingly comes under attacks from spammers, data thieves and other tricksters, according to the company's chief privacy officer.

Facebook, which has about 100 million daily visitors and about 175 million registered users, has come under scrutiny over how it manages user data as well as how it lets users control who sees their own data.

That aggregation of data, as well as high numbers of visitors, makes the site attractive to miscreants and cybercriminals.

"Obviously, we've become a very large target for people trying to hack the site, trying to spam people on the site," said Chris Kelly, who is also the company's head of global public policy, during a presentation at the E-crime Congress in London on Tuesday.

"In those rare occasions where these attempts get through, we learn very quickly."

Facebook has an automated system in place that's designed to either stop or eliminate fake profiles, one of the weaknesses of social networks.

It looks for odd behavior, such as having lots of friend requests rejected or too many searches conducted in a short period of time, which can indicate the use of scripts or a bot, Kelly said.

Chat messages and wall posts are also analyzed to see if they contain links to bad Web sites or are posted across a high number of profiles.

Facebook takes down thousands of fake accounts per week, some designed to spam people or perpetrate fraud, Kelly said.

The site also heavily relies on its users to report fake profiles, an additional mechanism that the company calls "community verification."

Additionally, Facebook has two security teams -- one in California and one in Dublin -- that will review reports of nudity, pornography or harassment within 24 hours and other e-mail complaints within three days, since those requests are often more complex, Kelly said.

As far as upcoming features, the company plans to integrate more granular controls over how users can share data with friends, Kelly said.

"You'll see this get more extensive over time rather than less," he said. That will allow users to carefully parse what groups of friends they want to share information with.

Still, if users really do not want anyone else to see a bit of information, they should not put it on Facebook at all, Kelly said.

"If you want something to stay truly secret, Facebook is not the site for you," Kelly said.

In other Facebook news, the company is moving ahead with new terms of use. Facebook came under criticism in mid-February after it modified its terms of use in a way that appeared to give the company perpetual control over material posted to the site, even if it was deleted.

In the wake of the controversy, Facebook reverted back to its previous terms while launching a process to let users help create new terms.

The site has two documents open for public comment through Sunday: "Principles" and the "Statement of Rights and Responsibilities," the latter of which will evolve into new terms of use. After Sunday, Facebook will respond to the comments, and then a ratification process will begin, Kelly said.

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