I just found out about a feature in Mac OS X that I think is absolutely great — the ability to create encrypted volumes to store confidential data. My father and I needed to exchange some sensitive financial information over the internet recently and we both looked around for a solution to do this securely with email. Of course, much to our confusion/delight, there are a ton of solutions out there. One of the solutions I found was to create an encrypted disk volume — we didn’t use this particular method for our email exchange, but there isn’t saying anything that we could not have.