Security and privacy

Security and privacy

Find out how 1Password keeps your data safe and secure from prying eyes. Security so strong, even we can't see your secrets.


1Password data formats

  • About the OPVault format

    Learn how the OPVault format improves upon the design of the Agile Keychain format.

  • OPVault design

    Learn about the design of the OPVault format, used by default when syncing with iCloud or Dropbox.

1Password features

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Master Password and Secret Key

  • About your Secret Key

    Your Secret Key keeps your 1Password account safe by adding another level of security on top of your Master Password.

  • How to choose a good Master Password

    Use the 1Password password generator to make sure that your Master Password is unique, random, and memorable.