Richard Ledgett said the NSA is researching the possibilities of exploiting internet-connected biomedical devices ranging from thermostats to pacemakers. The NSA deputy director said there are easier ways to track terrorists and foreign spies than to hack any biomedical devices they might have, but believed that these devices could be a source of information for the agency. The agency has not been able to help the FBI hack into iPhone belonged to the San Bernardino shooter, which was accessed by the FBI after buying an exploit from a group of hackers for a large sum of cash.
Source: https://thehackernews.com/2016/06/hacking-internet-of-things.html