Are SD cards &#x27;raw&#x27;?<p>I thought that they have their own ARM processors inside together with (updatable?) firmware. You can buy wifi-enabled cards, for instance.<p>OTOH, I assume they don&#x27;t have direct access to the USB bus and so can&#x27;t pretend to be other devices. But that still leaves lots of room to do nasty things with the data &#x27;secured&#x27; on it.