PST/OST Encryption
The best way to secure a PC is physical access. If someone can gain access to your PC then the job of hacking has been made easier. If a user gains access to a PC that is part of a network and logged in then what access do they have? Everything. This includes mail. Outlook is logged in with pass-through authentication and users can gain access to mail. If this computer is not joined then user credentials are provided to login to Outlook. One of my customers just asked if they had access to PST/OST files can they open? Yes they can be opened. PST/OST provide compression (which can obscure data) but they do not provide encryption. Encryption should be accomplished on the drive with EFS, Bit Locker or some 3rd party hard drive encryption tool.
