by the FBI it would be used pursuant to the appropriate legal process." Proponents of Magic Lantern argue the technology would allow law enforcement to efficiently and quickly decrypt messages protected by encryption schemes. Unlike a predecessor, Carnivore, implementing Magic Lantern does not require physical access to a suspect's computer, which would necessitate a court order. Uninstallation Older versions of Norton were defective. In the 2009 versions, Symantec added Norton Removal Tool, which removed their products, usually in less than a minute. The tool could be downloaded from Symantec's website. Windows Service Packs When Norton Internet Security 2008 was installed, users encountered incompatibilities upgrading to Windows XP Service Pack 3 or Windows Vista Service Pack 1. Users reported invalid registry keys added by a tool named fixcss.exe, resulting in an empty Device Manager and missing devices such as wireless network adapters. Symantec initially blamed Microsoft for the incompatibilities but accepted partial responsibility. Dave Cole, Symantec's Vice President & General Manager, acknowledged that users running Norton products were experiencing problems, but said the numbers were small. Cole said that Symantec had done "extensive testing" of its products with Windows XP SP3, but this issue was not encountered. Cole blamed Microsoft "This is related to XP SP3." Microsoft recommended that users contact Windows customer support. To resolve the problem, Symantec issued a fix intended for users before upgrading. Symantec recommended disabling the tamper protection component in the 2008 release, dubbed SymProtect. A tool to remove the added registry entries was available from Symantec. Windows Vista Sarah Hicks, Symantec's vice president of consumer product management, voiced concern over Windows Vista 64-bit's PatchGuard feature. PatchGuard was designed by Microsoft to ensure the integrity of the kernel, a part of an operating system which interacts with the hardware. Rootkits often hide in an operating system's kernel, complicating removal. Mike Dalton, European president of McAfee said, "The decision to build a wall around the kernel with the assumption it can't be breached is ridiculous", claiming Microsoft was preventing security vendors from effectively protecting the kernel while promoting its own security product, Windows Live OneCare. Hicks said Symantec did not mind the competition from OneCare. Symantec later published a white paper detailing PatchGuard with instructions to obtain a PatchGuard exploit. After negotiations and investigations from antitrust regulators, Microsoft decided to allow security vendors access to the kernel by creating special API instructions. See also Internet security Comparison