Yes. You can select an option to set your own encryption key that only you will have access too. Instructions on how to do this can be found here:

Or follow these steps:

Step 1 - Open Security Preferences

1 Open the CrashPlan app
2 Click Details.
3 Select the arrow next to your device name, and choose Device preferences.
4 Select ‘Security'

Step 2 - Set Your Archive Key Password

1 From Account Encryption Key Security, click Upgrade
2 Select Archive Key Password.
3 Enter the password you'd like to use as your archive key password.
Your password must be at least 8 characters and can include any combination of letters, numbers, symbols, and spaces.
4 Re-enter the archive key password, exactly as you entered it in the previous field.
5 (Optional) Enter a recovery question and answer that can be used to reset your archive key password in the event that it is lost or forgotten.
Your question and answer may include any combination of letters, numbers, symbols, and spaces.
6 Click Save.

The Changing encryption key security dialog appears.

Step 3: Confirm Your Security Upgrade

1 Read each of the archive encryption setting warnings, and indicate your approval by selecting I understand the risks.
If you have a recovery question enabled, it is possible to reset your password in the event that you forget your archive key password.
2 Click Save to permanently upgrade your CrashPlan security option to an archive key password.
The success message, "Security upgraded to Archive Password", appears.

If you choose this option neither Code42 or InMyBag will be able to recover your files if you loose your encryption key. Additionally we would not be able to complete a push or web restore to help you recover of gain access to your files.

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