One of the many new security features in Office 2010 is Office File Validation. This feature subjects files in the older Office formats (like .DOC and .XLS) to a format verification check before ...

Before actually loading them, the plug-in checks any files opened for proper file structure. It does this in a sandboxed environment with minimal privileges to limit the impact of any breach. This ...

Microsoft’s plan to “sandbox” Office documents in the next version of its application suite is an admission that the company can’t keep hackers from exploiting file format bugs, a security analyst ...

Spreadsheets that contain complicated formulas and a lot of data can take a while to load when you open them in Excel 2007, but that's not the only reason spreadsheets can be slow to load. Microsoft ...