Facebook, Twitter Spam Stopped by Start-Up

NEW YORK ( TheStreet) -- As social networking sites like Facebook and Twitter explode in size, they're increasingly being targeted by a new enemy: spammers.

Rather than spreading spam through e-mail, criminals are now turning to social networks where they can launch sophisticated attacks against users that appear to come from trusted friends and family.

Enter Impermium, a Palo Alto, Calif.-based start-up trying to curb so-called "social spam" like fraudulent registrations, fake following and friending schemes and account takeovers. Launched in 2010 by three former Yahoo! ( YHOO) execs, including the company's "spam czar" Mark Risher, Impermium is working with around two dozen clients, including large Internet portals, micro blogging sites, dating sites and large commenting platforms.

The company has also raised $9 million from top tier venture firms including Accel Partners, Highland Capital Partners and Greylock Partners.

"E-mail is saturated and everyone has gradually built up a healthy degree of skepticism about e-mail messages, but what is more innocent sounding than a Tweet that says 'here's a photo someone took of you, click here to find more'?'" Risher said.

A recent study by Barracuda Labs found that 90% of Internet users have received spam on a social network and one in four have received a virus or malware on a site such as Facebook or MySpace.

Spammers on these networks create fake accounts so they can "friend" users and then post links on their profiles containing malware or viruses. The bad link then spreads once other users click through. Some of these links contain offers for items like a free iPad or restaurant gift cards.

Facebook, in particular, took a hit last November when its network was flooded with a pornographic spam attack.

While Facebook says only 4% of its content shared by members is spammy, the site nonetheless recognizes its dangers. The site identified spam as an ongoing business issue that could impact its operations and reputation in its S-1 filing and nearly a third of the social network's employees are engaged in fighting spam, the company has said.

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