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Posts on your Facebook wall may lead to Trojan horse infection Singapore, 8 August 2008 -- IT security and control firm Sophos is warning users of Facebook to exercise caution when clicking on links in wall posts, following an attempt by hackers to infect computers by spreading messages containing malicious links on the popular social networking website. Messages left on Facebook users' walls are urging members to view a video (which pretends to be hosted on a Google website), but clicking on the link and visiting the webpage actually takes users to a site which asks them to download an executable to watch the movie. The executable file, detected by Sophos as the Troj/Dloadr-BPL Trojan horse, then downloads further malicious code (detected as Troj/Agent-HJX), and displays an innocent image of a court jester sticking his tongue out. “People have got to learn that clicking on links in messages can lead to a malware infection, whether the messages are in your email or on a site like Facebook. There has been a flurry of malicious emails recently posing as links to videos - so there's really no excuse not to know that this trick is being commonly used by hackers at the moment,”said Graham Cluley, senior technology consultant for Sophos. “Companies will once again be considering whether it's time to block Facebook in the workplace - not just for the usual productivity reasons, but because of the security threats that sites like this may pose to their organisation.” Sophos experts believe that businesses need to set policies regarding Facebook usage, and implement web security solutions, to prevent dangers entering the workplace. “Companies need to make up their own mind as to whether their users should be allowed to access websites like Facebook and MySpace during office hours. If workers are allowed access to these sites, then it's vital that they do not put their personal and corporate data at risk, and that they are fully secured against web-based infections,” explained Cluley. “The best defence is for businesses to protect themselves with a web security and control appliance which can filter internet access and prevent the downloading of malicious code.” Sophos recommends companies automatically update their corporate virus protection, and run a consolidated solution at their email and web gateways to defend against viruses and spam. For more information, and an image of the court jester displayed by the malware, please visit the SophosLabs blog: http://www.sophos.com/security/blog/2008/08/1632.html About Sophos: Sophos enables enterprises all over the world to secure and control their IT infrastructure. Sophos's network access control, endpoint, web and email solutions simplify security to provide integrated defenses against malware, spyware, intrusions, unwanted applications, spam, policy abuse, data leakage and compliance drift. With over 20 years of experience, Sophos protects over 100 million users in nearly 150 countries with its reliably engineered security solutions and services. Recognized for its high level of customer satisfaction and powerful yet easy-to-use solutions, Sophos has received many industry awards, as well as positive reviews and certifications. Sophos is headquartered in Boston, US and Oxford, UK. More information is available at http://www.sophos.com Media Contacts: Tony Tan Manning Selvage & Lee Worldwide Communications Tel: (65) 9048 6981 E-mail: Submitted by TonyTan@MS&L, Manning Selvage & Lee on Friday, 8 August 2008 at 12:49 PM Category: Enterprise Technology |
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