We've heard exchange getting hacked and millions of dollar worth crypto being stolen.
Last year, Myetherwallet was exposed and hacker penetrated and stole alot.
Scam ICO made away with millions in recent years.
Crypto traders and investors are taking precautions so as to not fall victim. This doesn't guarantee Scam free Crypto space coz right now someone is being scam.
What could be the biggest Crime in cryptocurrency
These hacks made a lot of users destitute, but I am surprised that you haven't mentioned about the biggest crypto-robbery till date. The Mt Gox robbery resulted in the loss of more than 650,000 coins (worth $3.5 billion at today's exchange rates) and a significant amount of fiat. Five years have passed and there has been no progress in the investigation. Most of us have give up hope that those stolen coins will be recovered and returned to us.