With the file open in Pages, Numbers, or Keynote, select File and then Set Password to choose and apply your password.

A handy guide to putting your sesetive files behind a passcode in Google's file manager app, Google Files.

Encrypt and password-protect your database in Microsoft Access. Learn how to set a Password on an Access Database.

We all have files that we'd rather not share with hackers and thieves (and maybe even our spouses). Here's how to put them in a place where no one else can open them.

A password-protected computer denies nosy employees access to your files.