![]() The first major one took place in 1977, when someone interrupted the audio of an ITV Southern Television broadcast from a tower in Hannington, England, with a message purported to be from an alien representative of an "Intergalactic Association." The message warned, "All your weapons of evil must be removed… You have but a short time to learn to live together in peace."Īs with the Chicago takeover, the Hannington broadcast tower was connected by a wireless uplink, not a hard-wired connection. But the WTTW takeover lasted a full 90 seconds, and the pirate TV broadcast's audio, while distorted, was audible to anyone who happened to be tuned in.īroadcast intrusions were not rare in the 1980s. In the case of the WGN news broadcast, engineers were able to change the frequency used in the uplink to the John Hancock tower after a brief interruption, and the audio from the pirate transmission was drowned in static. ![]() ![]() The hack was made possible by the analog television broadcast technology of the day-the attacker was able to overpower the signals sent by the television studios to a broadcast antenna atop the John Hancock building in Chicago with his or her own signals. ![]() Further Reading Hackers set off Dallas’ 156 emergency sirens over a dozen times
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