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Excel security is a myth: Passwords and hidden rows won't save your data, but this will
Excel is designed for transparency and calculation, which is exactly why it's so bad at keeping secrets. It offers plenty of ways to keep your data out of sight, but don't mistake those for actual ...
How-To Geek on MSN
Why the XLS format needs to disappear from your hard drive forever
Upgrade to XLSX for smaller file sizes, enhanced security, modern collaboration features, and to prevent accidental data loss.
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