I recently bought an RTL-SDR. I've had so much fun with it so far and learned so much, which was my goal. I designed my own antenna in Fusion 360 and built it. I'm currently developing my own SDR application with a custom spectrum display etc. So far I can demodulate AM/FM/SSB and I'm trying to get into decoding digital modes as well.
There is so much to learn and enjoy even without transmitting. I like to listen in on air traffic control and download weather satellite images.
I just listened to an episode of The Darknet Diaries with an ex-CIA (I think) agent and he was talking about MICE. I'm pretty sure he said the C was for Coercion, but that does include blackmail as you said.
In Windows 11 there's also a setting to make the "Print Screen"-key work in the same way as Win + Shift + S. The setting is called "Use the Print screen button to open screen snipping".
A lot of great personal sites here. Mine is just a simple GitHub Pages site which I recently set up. It contains some of my hobby projects and CTF writeups.
There is so much to learn and enjoy even without transmitting. I like to listen in on air traffic control and download weather satellite images.