Hackers will keep hammering Facebook, say researchers
Rogue app attacks that spread adware could become much more dangerous
Computerworld - Attacks targeting Facebook users will continue, and they could easily become even more dangerous, a security researcher said today.
Over the last two weekends, cybercriminals have launched large-scale attacks using rogue Facebook applications that infect users of the popular social networking site with adware that puts pop-ups on their screens.
"There are limitations to what Facebook can do to stop this," said Patrik Runald, a U.K.-based researcher for Websense Security Labs. "I wouldn't be surprised to see another attack this weekend. Clearly, they work."
According to Roger Thompson, the chief technology officer at antivirus vendor AVG Technologies, last weekend's attack was about half the size of the one the weekend before. Both featured messages that used sex-oriented videos as bait to convince users to install a Facebook application and then download a purported update to a free video player program. The download was actually adware.
Thompson agreed with Runald that the attacks would keep coming. The hackers are "trying to make money and looking for ways to 'work' Facebook," said Thompson in an instant message.
Runald also pulled apart the rogue application's source code and found it "very simple" in its construction. "It's not designed to do mass spreading," he said, noting that the software sent messages to the walls of just 10 friends of an infected Facebook user. "Facebook has automated [security] systems in place," Runald said. "I assume that one of them is based on the volume of the same message, so [the attackers] are trying to lay low by only sending to 10 friends."
Websense has identified more than 100 variations of the same Facebook attack app used in the two attacks, all identical except for the API keys that Facebook requires. The number of permutations was simply a tactic to make it more difficult for Facebook to remove the rogues.
Last Monday -- and after two consecutive weekends of attacks -- Facebook asked for users' help in spotting the malevolent software.
"Several malicious applications have surfaced recently," Facebook wrote on its security page. "We've been disabling these applications as soon as they're reported to us or surfaced by our systems -- and before the scammers can get very far. We need your help, though. Report applications that look suspicious, and as always, don't click on strange links, even if they've come from friends."
But the attacks could easily become more treacherous. "The download [that attackers] prompt users to install could be anything," said Runald. "It could be fake antivirus software or a full-blown Trojan. It could be the Koobface Trojan, for instance," he said, referring to the botnet malware that has repeatedly targeted Facebook users as well as those on other social networks such as MySpace.
Koobface is still very active, some security researchers have said.
"They could monetize it more than by pushing adware to people," said Runald. "But I think they're doing it this way so as to attract less attention from Facebook."
Facebook will continue to have trouble roping in these kinds of attacks, said Thompson. "Facebook has more than a million developers the last time I looked," he said. "I'm fairly confident that not all of that 1 million have sweetness and light in their hearts. And being a Facebook developer is, well, free, so there's not a huge entry barrier for hackers."
Thompson said that what alarms him is the fact that it's very difficult to know who the developers really are, and thus separate the wheat from the malicious chaff. "Any other software that I use or buy, I can go to their home page and think about them a bit," he said. "But I see many [Facebook] apps whose ownership is hidden behind privacy protections. No way in Hades I'd buy or use normal software from someone like that."
One defense against such attacks is a free tool from Websense called Defensio 2.0 that's designed to protect Facebook pages against spam, unwanted URLs and malicious content.
"It's the only thing of its kind," Runald claimed.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, or subscribe to Gregg's RSS feed . His e-mail address is email@example.com.
Read more about Security in Computerworld's Security Topic Center.
- 15 Non-Certified IT Skills Growing in Demand
- How 19 Tech Titans Target Healthcare
- Twitter Suffering From Growing Pains (and Facebook Comparisons)
- Agile Comes to Data Integration
- Slideshow: 7 security mistakes people make with their mobile device
- iOS vs. Android: Which is more secure?
- 11 sure signs you've been hacked
- The 12 PCI DSS 3.0 requirements addressed by Peer 1 Hosting This handy quick reference outlines the 12 PCI DSS 3.0 requirements, who needs to be compliant and how Alert Logic solutions address the...
- Defense Throughout the Vulnerability Life Cycle This whitepaper provides insight into how to leverage threat and log management technologies to protect your IT assets throughout their vulnerability life cycle.
- Mobile Policy Checklist Here's what to consider when putting together a mobile policy designed to support a highly productive workforce.
- Securing BYOD Mobile computing is becoming so ubiquitous that people no longer bat an eye seeing someone working two devices simultaneously. Individuals and organizations are...
- Live Webcast On-demand webinar: "Mobility Mayhem: Balancing BYOD with Enterprise Security" Check out this on-demand webinar to hear Sophos senior security expert John Shier deep dive into how BYOD impacts your enterprise security strategy...
- Live Webcast Endpoint Backup & Restore: Protect Everyone, Everywhere Arek Sokol from the bleeding-edge IT team at Genentech/Roche explains how he leverages cross-platform enterprise endpoint backup in the public cloud as part...
- Streamline Software Asset Management, Compose a software Management Symphony Keeping track of your organization's software is easy with effective software management solutions from CDW. View the videos in our software solutions channel
- Druva inSync: Endpoint Data Protection & Governance CLICK HERE to watch this video about protecting corporate data on laptops and mobile devices, sponsored by Druva. All Security White Papers | Webcasts