There are many things most likely to consider whenever you're investing money in crypto..
These are:
1. Volatility of the Market.
2. They don't have the knowledge about crypto.
3. Negative news that they see or hear in social media/TV Media.
4. They were scammed and afraid to invest again.
5. Threats of hackers in the internet.
But users can also protect their computer from hackers by using:
1. Virtual Private Network for Internet Protocol
2. MetaMask Wallet
3. Not saving any private keys in your PC.
These are some of the basic fundamentals that newbies must know and learn. Everyone have their own responsibility to take care their own security. Unfortunately there are instances that beyond from our imagination and preparation that made fear to some of us here that result to instant leaving crypto.