On Ice Cream Sandwich (CyanogenMod 9), Under
Settings > Security there is an option to "Encrypt phone". I understand that this will require me to provide a PIN whenever I start up my phone. But what wasn't explained was if it covers the micro SD data as well?
I want to make it so that in case my phone gets stolen, the thief won't be able to simply get my micro SD card and pop it in to a card reader and view its contents, some of which may be sensitive.