Spray your cables with something the cat hates the taste of. I use this stuff on things my dog chews on, it works every time. Once they try it once or twice they won't try it again. https://www.amazon.com/Grannicks-Bitter-Apple-Deterrent-32-Ounce/dp/B0006G5REC
The only thing that has saved my couch, shoes, etc.
Seriously?
/u/somesillynerd, pls buy this and spray it on his thumbs after he showers in the morning.