OH, GOODY: Air Traffic System Vulnerable To Cyber Attack. “ADS-B transmits information in unencrypted 112-bit bursts – a measure intended to make the system simple and cheap to implement. It’s this that researchers from the US air force’s Institute of Technology at Wright-Patterson Air Force Base in Ohio are unhappy with. Donald McCallie, Jonathan Butts and Robert Mills warn that the unencrypted signals could be intercepted and spoofed by hackers, or simply jammed.”