An anonymous reader writes "Until today, hacking and hijacking planes by pressing a few buttons on an Android mobile app has been the stuff of over-the-top blockbuster movies. However, the talk that security researcher and commercial airplane pilot Hugo Teso delivered today at the Hack in the Box conference in Amsterdam has brought it into the realm of reality and has given us one more thing to worry about and fear (presentation slides PDF). One of the two technologies he abused is the Automatic Dependent Surveillance-Broadcast (ADS-B), which sends information about each aircraft (identification, current position, altitude, and so on) through an on-board transmitter to air traffic controllers, and allows aircrafts equipped with the technology to receive flight, traffic and weather information about other aircrafts currently in the air in their vicinity. The other one is the Aircraft Communications Addressing and Reporting System (ACARS), which is used to exchange messages between aircrafts and air traffic controllers via radio or satellite, as well as to automatically deliver information about each flight phase to the latter. Both of these technologies are massively insecure and are susceptible to a number of passive and active attacks. Teso misused the ADS-B to select targets, and the ACARS to gather information about the onboard computer as well as to exploit its vulnerabilities by delivering spoofed malicious messages that affect the'behavior' of the plane."