*BEEP* Your heart's being hacked.

Sort of a follow-up to this disturbing thread from earlier in the year: Hacking Humans

Researchers target hack-proof pacemakers - EE Times

There are over 2.5 million medical implants, including 600,000 pacemakers (implantable cardioverter deýbrillators) currently in use in the U.S., according to Fu. Many are programmable, using the 402-405 MHz medical implant communication service or the older short-range 175-KHz band. Most implants are programmable only in the doctor's office, but an increasing number are being made accessible over the Internet, thus exposing them to the possibility of hacks.

...A prototype protection circuit uses a wireless integrated sensor platform RFID tag to detect hacks without drawing any power from a pacemaker battery. It then uses a piezoelectric actuator to provide heart patients with an audible alarm that pacemaker security has been breached.
Moral of the story: take care of that ticker!