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.
I started programming at a pretty early age and I've always (probably from the first time I saw an emulator) had a goal to code an emulator myself. I start and abandon hobby projects all the time, so it took me quite a few tries to actually get some traction. But when I finally did, and I got to the point where I could see the BASIC prompt on my C64 emulator it was an amazing feeling of accomplishment. It was a great learning experience, not just making the emulator, but the whole journey to learn enough to finally make it happen. I highly recommend it if that kind of thing interests you, if not, then don't do it, do something that interests you instead.
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.