Block some Office documents to assure security
Microsoft is recommending IT administrators block users opening Office documents as a way to prevent attacks, tacitly acknowledging that Office cannot be completely secured.
Called "File Block," the feature allows administrators - or technically astute end users - to declare the specific Office file types that can or cannot be opened by Word 2003/2007, Excel 2003/2007 and PowerPoint 2003/2007. File type restrictions are spelled out by editing the Windows registry or through Group Policy settings.
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