For confidential files that people would want to be kept at maximum security, applying passwords to ensure that only proper personnel will be able to open them has been the regular exercise for basic security measures. Among the usual files that would require such security levels are that of payrolls, business plans, and management projections and outlook, a lot of which are kept in safe storage to avoid people and competitors from planning to gain access to them.
Payrolls, especially for people who are at higher levels are usually restricted materials. The only person allowed to access them would usually be the finance, personnel and upper management honchos. In organizations, curiosity and challenge are the usual culprits for people to try and crack the passwords. However, if they are already under wraps and given advanced warnings, access can be limited and contained so that they would not even entertain the thought of doing such mischief which will not do them any good anyway.
[tags]password protect, cryptography, file access[/tags]