I have to be honest but I haven’t followed any sports for the last 15 years. I believe every team tries to “steal” the other teams signals in all sports that use them. I remember trying to figure out other team signals back in high school (70s). But it definitely wasn’t to this extent. Not sure why this is an issue.
I remember Bear Bryant surrounding the practice field with sheets so no one could see them practicing the Wishbone they were planning on implementing.
The only difference between then and now is that the quality of the video equipment used to film the games is vastly superior now.
A friend was the assistant coach of a class A high school team here in S.E. Mich. and they were always filming the games of upcoming opponents and studying them in preparation for the next game
I just see it as gathering intel, opposition research or what not.
If you don't want your signals hacked do like our intel agencies do. Have countermeasures in place. If they are hacking your voice coms use encryption etc.
If you are skilled at your craft and know you they are stealing your signals fill them with misinformation. If you steal their single telling you the next play will be a run and is turns out to be a pass you just got punked.
Its all part of the game.
When I played senior league I played 3rd base and catcher and I would steal signs and tell the rest of the team what was coming. I was playing third base once, with a runner on first and the other teams coach was in the 3rd base box doing his signs, which were pathetic and I yelled steal and bunt and charged in for the bunt and the batter bunted the ball foul and sure enough the runner took off from first.
The coach was furious and yelled at me how did you know that and I said your signs are easy to figure out. You can’t do that he yelled and I said can too, the home plate ump stepped in and said to the coach, you best change your signs.
Both sides do it and if you suck at disguising your signs, that’s on you.