I'm looking to start up a business, and the bulk of the work will require Windows so I'll need to set up a VM on a mac. This VM would contain private client data that I can't risk losing (as in getting into someone else's hands - setting up a good backup system isn't hard). The data is for investment funds and includes trading history, so when I say "can't risk losing", I really mean it. Originally I was thinking of getting a Mini to keep at home, which would store all the info, but I realised that I could just store the data on a hard drive and plug in my MBA. But now I'm wondering if there's any way that I could have access to all the required files when I'm out with my MBA, but if someone were to steal my MBA and know what's on it, they still wouldn't be able to get to it. So I guess that leaves two options: 1. Files are purely "on the cloud", I download when I need them then upload changes, delete local copies. Access is strongly password-protected. 2. Files are all on my MBA, but are very strongly encrypted. The volume of the data isn't much - maybe a dozen GB at first, but I'd be willing to pay a fair bit for a secure set up. And just a reminder, the data is for Windows-based files. Any suggestions?