I just performed a preliminary Google for "crack excel password" and a bunch of sites came up. I've used Squrf's method to get around Word passwords before, but I've never tried a spreadsheet.

Microsoft Word's password-protect functionality is designed to prevent edits and modification to templates and other important documents. However, it can be a real pain if you need to edit or ...

Learn why strong, secure paswords matter by seeing how easy it is to crack passwords with a common tool. Longer, more complex passwords are best, and you'll see why.

More password cracking action from Null Byte! Today we aren't going to be cracking passwords per se, rather, we are going to learn the basics of generating rainbow tables and how to use them ...