Even the most secure encryption algorithm can be undone if a third-party is capable of easily guessing the password you've created. To make sure that this doesn't happen, your password should: Be at least 10 characters, or ideally, 16 characters long. Composed of numbers, upper and lower-case letters, as well as symbols. Not contain your name, birthday, address, or other personal information. To help in creating a secure password automatically, feel free to use our complementary password manager.