Letter Password Protect For Free - Password Protect File

Protect a document with a passwordGo to File > Info > Protect Document > Encrypt with Password.Type a password, then type it again to confirm it.Save the file to make sure the password takes effect.

How secure is the encryption? The encryption in Microsoft Office 2016 is considered safe (AES with 256-bit key) and takes a very long time to break with today's machine resources if the password is secure enough. See the Username and Password page for more information on how to make secure passwords.

You can protect private and sensitive information in a Word or PDF document by password-protecting the file. This encrypts the file's contents so it can't be accessed by anyone, or read by any program without entering the password first.

Even the best eight-character passwords should no longer be considered secure. Twelve is good enough for now, but you really should consider moving to 16 for the long run.

What Makes a Password Strong? The key aspects of a strong password are length (the longer the better); a mix of letters (upper and lower case), numbers, and symbols, no ties to your personal information, and no dictionary words.

Generally speaking, the strength of a password is determined by three things: the length of the character set used, the length of the password itself, and to a lesser extent, the variety in characters chosen.Second, the length of the password is another very important metric for determining password strength.

Protect a document with a passwordGo to File > Info > Protect Document > Encrypt with Password.Type a password, then type it again to confirm it.Save the file to make sure the password takes effect.