NSA Ghidra software reverse engineering framework
There's a discouragment the comes in the RE community that to be useful at all you need to be able to write your own exotic packer decoders, but I use Ghidra about once a month for really basic security incident response to pull apart "driver" installer packages to see where they are phoning home to, evaluating enterprise vendor-ware packages looking for hard coded credentials and snoopy telemetry, sometimes I can pull down the second stage of a phishing attempt against one of our users and RE it just to see what the level of sophistication the attackers having a go at us are at, and I've used the cantor dust plugin to quickly find sections of compressed and encypted data in firmware images.There is no chance I will ever publish original RE research, but it's a handy go-to tool, along with cyberchef, binwalk, and some other breadth-first static analysis tools for hunting specific IoCs. I could probably teach a solid generalist who cared to get to the level of being able to dissassemble something and say, "yeah, this is dodgy" or not in an afternoon.As an exercise, next time you get a cheap peripheral like a headset or a other usb device, pop the driver installer package into ghidra and click through the call graph just to see what else it does. You may be surprised.