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, N...

Windows 7 64-bit will soon take over desktop computers.

Consumers have had the option of 64-bit Windows computing since the release of Windows XP Professional x64 Edition in May 2005, four years after the release of Windows XP 32-bit. At the end of 2006, Windows Vista 32-bit and 64-bit versions were released simultaneously. Yet chances are you're currently using a machine that runs the 32-bit version of Windows.

This is about to change. Windows 64-bit has started to gain a significant footho...