1. Malicious program:
-ransomware programs;
-viruses;
-fake links (substitution);
-phishing (unauthorized access to personal information).
2. Hacker attack.
We all know what it is. I am most interested in the possibility of a large-scale and coordinated hacker attack. This will be done by States and special services. Another issue is that many hackers are the bearers of an alternative worldview. Moreover, protection against hacker attacks is also developing.
3. Bankruptcy and closure of cryptocurrency exchanges
4.Lack of legal framework and legal risks
5. Very high volatility of the course
6. The loss of the secret code
According to statistics, this happens in 25% of the owners of crypto-braids, who lost about $18 billion to Restore the code and return the money is impossible.
7. Erroneous transaction
An error in entering the code for only one digit or sending it to the wrong address also leads to losses. The transaction can not be canceled, so the amount sent can not be returned.
8. The destruction of the infrastructure of the global Internet.
And no matter it will be a man-made disaster, war or terrorist attack
9. Long-term power outages in the scales of the planet
You should add the very benefit of crypto, which ultimately beats all these big dissatvantages. And that is:
It allows you to hope that one day you will become rich, by beeing part of something which is only at the beginning of it's ascention.