<human>:  How can I backup my computer to an external hard drive with maximum security?
<bot>: To backup your computer to an external hard drive with maximum security, you should use a good backup program with an encryption feature. This will help protect the data stored on your external hard drive against unauthorized access and malicious entities. Additionally, you should make sure that you are using a hard drive with a high-quality encryption algorithm, as this will further help to ensure the maximum security of your data. Lastly, make sure to regularly update your backups in order to ensure the latest data is always backed up.