idea. dallas pd and the fbi are investigating. joining us now, thank you for joining us. thank you, rachel. it s you who is the hero. let s just end this here. it seems like we ve peaked. when i first heard this story i assume it was a computer-based hack. when i heard it was a sound-based hack, the first thing that occurred to me was this is like the beginning of hacker s school. this is how people used to hack long distance phone calls, right? th this is og hacking school. back in the day, in the early 90s, hackers like kevin mitnik and a dude named captain crunch were taking the whistles out of cereal boxes. when you pick up a touch tone phone, a land line phone and you touch the numbers you know how there are two different tones?