Once you have set the password, the system will simply prompt you for it each time you plug it back in. LUKS (Linux Unified Key Setup) allows you to create encrypted containers for files as well as encrypting entire USB sticks with a password via a program called Disk Utility. If you want to be able to communicate securely with other people my best advice is to use Torchat which I will touch on in another post. The alternatives I discuss here are mainly for information you want to protect within your home or business e.g financial records so aren’t particularly suitable for sending information across the internet. In the first instance it will be important to consider your threat model and what kind of information you want to keep safe. There are a range of free and open source tools out there to help keep your information safe from prying eyes. Those of you who follow my blog will have seen my previous post detailing my reasons for phasing Truecrypt out when it comes to protecting my personal data and why I recommend you do the same.
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