In this Avi Rubin keynote, the computer science expert discusses the lack of consideration for security consequences when adopting new technology.
Rubin begins his examples by discussing the development of wireless-controlled internal implants. A pacemaker that needs to have its sequence modified can be changed via a wireless connection to avoid having to constantly undergo surgery. What this entails is that hackers are able to wirelessly induce a fatal rhythm.
Although developers create threat models, it isn't necessarily true that hackers will adhere to those precautions. Hackers are developing more sophisticated and stronger methods of breaking into software systems and this needs to be accepted and considered before society continues to become more dependent on technology.