U.S. Microsoft announced that they disclosed free anti-virus software "Microsoft Security Essentials" by 19countries including Japan on the 29th on the 28th. OS is Windows 7/Vista/XP. Moreover, it corresponds to the XP mode of Windows 7.

Regular..user..free of charge..use..user's registration..necessary.

When it operates quietly by the background, and the user is warned only when it is necessary, Microsoft Security Essentials is Iu according to Microsoft. Use obstructively of usual work even with old, incompetent PC because of the limitation of CPU and the memory usage is enabled.

It becomes the first product using "Dynamic Signature Service" of Microsoft besides there is a real time security function in Microsoft Security Essentials. It is assumed that this technology is a technology that can download the always latest virus definition file without waiting for periodic download.

http://internet.watch.impress.co.jp/docs/news/20090929_318137.html

Japan is good country!
http://japan-power.net/
PLEASE come here!