I would think that simple devices are easier to secure. They don't have the same horsepower available for encryption/decryption, but they have far fewer vulnerable spots than a complex system. I doubt that anyone knows how many points and methods of potential entry there are for a typical PC.
A blue tooth device may have only one point of entry and only one protocol to defend. If the 8-bit MCUs don't have enough power to be secure, even at that level, maybe the low-cost 32 bits will be able to make greater inroads by meeting that requirement.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.