Unisys has released a new version of its network security tool called Stealth. It uses four layers of encrypted packets to hide network traffic from prying eyes. The tool is available for desktops and Windows 7 and 64-bit versions of the company’s software. The company is working on a better and more secure version of the tool. We tested the system and found it was hard to find out what was happening with the new tool. It is available in the wild for the first time in the U.S. and Canada.”]