I have a number of spreadsheets that I use to store sensitive information. Usernames, passwords, etc. These documents are password protected themselves, but if they're anything like "protected" PDFs, ...
How-To Geek on MSN
Excel security is a myth: Passwords and hidden rows won't save your data, but this will
From hidden rows to sheet protection passwords, Excel's "privacy" features are easily bypassed—encryption and deletion are much more watertight.
一些您可能无法访问的结果已被隐去。
显示无法访问的结果