I can give a good example of a specific type of scam here.

Once there were many HYIP/MLM websites that used to pop up, run for a month or two and then one fine morning shut down without a trace leaving the investors on this forum discussing about where their money vanished. A few days later a website claiming to recover money lost on that site comes up and asks for a small fee from everyone in order to get their money back. The ones who do that, are hopeful that this "recovery service" will help them, but after a few days even the "recovery service" stop responding.

I prefer to call this the recovery scam. It is common when people are in a chaos and emotional about lost money. Whether it is applicable in your case - I think you have already understood that. Remember that to keep bitcoin secure you need to secure your devices, how you generate and store your keys, what shit you download from the internet. So called people who hack and recover stuff are mostly charlatans.