Symantec is warning about a new Trojan horse that encrypts files on compromised computers but offers no ransom note like other software designed to hold data hostage for a fee.

Instead, a Web search for terms related to the Trojan horse leads to a company offering a way to remove the malware. The company offering the product used to charge for it but now offers it for free.

Trojan.Ramvicrype uses the RC4 algorithm to encrypt files on systems running Windows 98, 95, XP, Windows Me, Vista, NT, Windows Server 2003 and Windows 2000, according to Symantec's Web site. … Read more

Scammers are targeting social networks with phishing scams and relying more heavily on worms and Trojans to attack computers, according to security trend reports to be released Monday by Microsoft and McAfee.

Phishing attacks saw a big spike in May and June, primarily because of campaigns targeting social-networking sites, according to Microsoft's report covering the first half of 2009. Gaming sites, portals, and Web sites of banks and retailers were also popular targets for phishing attacks, the report said.

Trojans, including rogue security software, remained the most prevalent category of threats, while Microsoft statistics show that worms rose from … Read more

Time-lapse movies can be a complicated affair, and quite often involve either a lot of special equipment, and/or post-processing skills. For just a buck though, you can use the recently released Timelapser app (link opens in iTunes) to turn your iPhone into a tool that can do this time-bending filming technique using nothing more than the onboard camera.

Depending on what model of phone you have you can use the app to take a picture anywhere from every three seconds to once per half hour. All the while it grabs each frame and stitches it into a movie that's saved on the phone, and that can also be e-mailed to friends.

Of course if you really want to cook with gas, you'll need an iPhone 3GS, which lets you speed up how fast the phone can take shots. Alas, with my lowly 3G I was limited to taking a shot every six seconds. Owners of the original iPhone have to step it down to eight seconds.

The app has a wealth of settings that let you pick things like how large the video's resolution is, how many frames per second it should be, and how long you want the delay to be before it starts shooting. This can be useful if you're propping up your phone somewhere and need time to set up your scene. Users can also use the app just to take a series of photos one after another which get saved in your phone's camera roll.

As I noted when I checked out the IP Camera app, which can turn your iPhone into a networked security camera, the very best way to use this app is with one of Apple's fancy docks. You can also just prop it up with whatever you may have laying about the house, but with the dock you get the benefit of… Read more

Kaspersky unveiled a new tool on Thursday called "Krab Krawler" that analyzes the millions of tweets posted on Twitter every day and blocks any malware associated with them.

The tool looks at every public post as it appears on Twitter, extracts any URLs in them and analyzes the Web page they lead to, expanding any URLS that have been shortened, Costin Raiu, a senior malware analyst at Kaspersky, said in an interview.

The company is scanning nearly 500,000 new unique URLs that appear in Twitter posts daily, he said. Of those, anywhere between 100 and 1,000 … Read more

Although Microsoft isn't making its own PCs, the software maker is taking an active role in customizing just what goes on the computers it sells through its online and retail stores.

In its new role as PC retailer, Microsoft is loading computers with what it's calling its Microsoft Signature experience--a collection of Microsoft products, including the complete Windows Live suite, Security Essentials antivirus product, Zune jukebox, and Bing 3D Maps software, as well as Adobe's Flash and Acrobat Reader products. Internet Explorer 8 is the browser, with Bing as its default search provider.

The computers are being … Read more

Twitter warned on Wednesday about a new phishing attack in which direct messages to users link to a fake log-in page that steals passwords.

"We've seen a few phishing attempts today; if you've received a strange (direct message), and it takes you to a Twitter log-in page, don't do it!" the Twitter spam warning says.

The direct messages say: "hi. this you on here? http://blogger.djh****.com," Sophos reports in a blog post. The full URL is obscured to prevent people from unwittingly visiting the phishing site.

Clicking on the link takes … Read more

On the heels of one fake Facebook e-mail scam, a researcher warned on Wednesday of another such campaign in which users of the popular social network are being tricked into revealing their passwords and downloading a Trojan that steals financial data.

In the latest scam being blasted to e-mail in-boxes, a legitimate-looking Facebook notice asks people to provide information to help the social network update its log-in system, said Fred Touchette, a senior security analyst at AppRiver. When the user clicks the "update" button in the e-mail, they are directed to a fake Facebook log-in screen where their … Read more

The U.S. Computer Emergency Readiness Team warned BlackBerry users on Tuesday about a new program called PhoneSnoop that allows someone to remotely eavesdrop on phone conversations.

The PhoneSnoop application must be installed on the phone by someone who has physical access to it or by tricking the user into downloading it, the CERT advisory said.

The author of the app, Sheran Gunasekera, director of security for Hermis Consulting in Jakarta, Indonesia, says it wasn't written to do any actual harm, but rather to warn of the dangers that still exist with the BlackBerry.

The application can be used … Read more

If you have an SMC8014 cable modem/Wi-Fi router from Time Warner your network might still be vulnerable to attack.

Blogger David Chen reported last week on a security hole affecting about 67,000 combo modem/router devices that could allow anyone to access Time Warner customers' private networks, snoop on sensitive data, and direct users to malicious Web sites.

At the time, Time Warner Cable spokesman Alex Dudley said a patch was being rolled out and a permanent fix was being tested.

On Monday, Chen published an update to his blog that says he is still finding evidence that … Read more