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
Never invest in any ICO period how elaborate they could explain about how it solves certain problems unless it is from a well known team with reputation, the wallet and exchange hacks are a thing you have to be aware because your coins are not safe with your not storing it in your own private wallet, so the best thing is to move the coins from exchanges after you are done with your trading and if you can take care and follow those then your investments are safe.