The only scams I've been a victim of is of exchanges going bust taking my coins with it.

I've learned how to detect the possibility of exchanges going bust though: they usually hike withdrawal fees in a bid to get you to keep your coins on the exchange. And they usually offer things like lending or "safe boxes" where you can earn "interest" on your coins. Those things are also designed to get you to keep your coins on the platform, and is a sign they don't quite have enough for redemptions if everyone withdrew their coins.