Starting today, Windows 7 users can download a voluntary update to Microsoft's Windows Activation Technologies (WAT).

"This update will detect more than 70 known and potentially dangerous activation exploits," Joe Williams, general manager of Microsoft's Genuine Windows program, said in a post on the Genuine Windows blog Thursday.

The update will initially be available via the Genuine Microsoft Software page on Microsoft's site, followed Wednesday by the company's downloads page.

Later in the month, the update, prosaically named the Windows Activation Technologies Update for Windows 7, will be offered to users by Microsoft's Windows Update site. Unlike similar earlier updates, however -- when WAT was still known as Window Genuine Advantage, or WGA -- this update will be categorized as "important" rather than "critical." That is it will not force or trick users into downloading it.

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