Websense: Skype worm on the loose
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Messages sent via Skype's IM tool ask users to download file, which can steal password, other information, security firm says.
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Virus writers have grafted a network sniffer into the latest variant of the SDBot worm series. So far there are no reports of SDBot-UH in the wild but the inclusion of selective network sniffing along with
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A new worm that spreads via Microsoft&#39;s instant messaging client began badgering users Monday, several security firms said. Dubbed Funner, the worm propagates by sending itself to all the contacts listed in
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The Bagle worm shifts shape to outsmart antivirus software. Plus: Media player patches and Feds' fraud crackdown.
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Blog: Yahoo IM worm directs victims to malicious web site where they are duped into typing in their password and it sends itself to the victim's contacts
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A low-threat Internet worm is attacking Skype users worldwide.
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Here's how nontechnical users can secure their own instant-messaging conversations such that an attacker is unable to listen in (be it the government or a nosy neighbor).
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Source code for variants of the cell phone worm is published online, raising fears that more offshoots are on the way.
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After a fairly quiet fall, mass-mailing worm starts to spread on Windows PCs. Plus: Air Force turns to Microsoft for security help.
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Insecurity plug-in Skype users, Beware a new Trojan that uses subtle social engineering tricks to try to steal your login credentialsâ¦
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Skype has been forced to turn off a video-sharing feature in its software because it could be misused to launch a self-copying worm attack against Skype users, security researchers said Tuesday.A bug in the software, which was first reported last Thursday by security researcher Aviv Raff, stems from the way Skype uses an Internet Explorer component to render HTML.Skype&#39;s video-sharing feature allows users to share videos hosted on two sites -- Dailymotion.com and Metacafe.com -- while chatting with other Skype users.Last week Raff showed how attackers could exploit the bug to run unauthorized software on a Skype user&#39;s PC. But on Tuesday, the security researcher said the flaw was more serious than he&#39;d first thought. It can &quot;be triggered by simply visiting a Web site, or clicking on a link from your instant messaging application,&quot; he wrote in a blog posting, &quot;Which basically means that this vulnerability is now wormable.&quot;Skype appeared to have pulled the video feature from its client software on Tuesday as a result of the bug. Users who attempted to click on the &quot;videos&quot; button within a chat window were greeted with a message that the feature was unavailable &quot;because of some security concerns.&quot;&quot;Our brightest engineers are rattling their wrenches to make things all right and bring the beloved videos back. Soon,&quot; the message read. &quot;Sorry about this.&quot;Skpe representatives did not return calls seeking comment. Last week, Skype spokesman Villu Arak confirmed that there was a security problem for Skype 3.5 and 3.6 users who visited the Dailymotion.com Web site, but users were still able to share videos using Metacafe.com.On Tuesday, however, Skype pulled the video feature altogether after being informed of the new problem, Raff said.Because Metacafe had a cross-site scripting flaw, a common type of programming error, Raff was able to run JavaScript on Metacafe.com, which could then be used to run unauthorized software on the victim&#39;s computer. Attackers could then forward a link to the malicious Web page to all of the Skype contacts in the victim&#39;s computer, spreading the infection.For Raff&#39;s attack to work, an attacker would have to post a maliciously encoded video file to either of the Metacafe or Dailymotion Web sites. Metacafe said Tuesday that it&#39;s &quot;highly unlikely&quot; that this kind of malicious video would make it through the site&#39;s content-filtering process.In a statement, the company said it expects Metacafe videos to be available to Skype users as early as Wednesday morning.Raff said that because the attack could lead to a widespread worm outbreak, it would be better for Skype to fix the underlying problem before bringing Metacafe back online.Raff believes that Dailymotion was probably susceptible to this type of attack as well, although he was unable to confirm this after Skype cut off access to the Web site.The problem lies in the fact that Skype uses a Windows Internet Explorer component with inappropriate security settings, researchers say. Instead of processing pages it renders with the more secure &quot;Internet Zone&quot; security setting, Skype uses IE&#39;s &quot;Local Zone&quot; security setting, usually reserved for more trustworthy content.Until Skype engineers make some changes to their software, more of these problems will continue to pop up, Raff said.Another security researcher who has been studying the flaw agreed.&quot;If they keep their Skype client running in the Local Zone of IE, we will see more of these,&quot; said Petko Petkov of GNU Citizen via instant message. &quot;Before killing Metacafe, anyone who owns the server would have been able to own every Skype user on the planet.&quot;
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Today's blog post discusses methods with which a non-technical user can secure their own instant messaging conversations such that an attacker is unable to listen in (be they the government or a nosy neighbor sniffing the wireless network from next door).
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German police have long expressed interest in having surveillance tools that could crack Skype, but leaked documents seem to indicate that thanks to specially commissioned malware, they do indeed have ways of making your VoIP talk.
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How spyware, a program that creeps onto a computerÂs hard drive unannounced, is wrecking the Internet.
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Easy-peasy-sleazy: A new piece of PHP code making the malware rounds can install a phishing site on a compromised server in about two minutes.
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Sophisticated computer worm is setting up a botnet that may be hard to beat.
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Ziff Davis - A new version of the Sober worm is having quite a bit of success infecting users in Europe through the use of social engineering.