Because of the semi-anonymous nature of Bitcoin, its used in ransomware attacks. Hackers breach networks and hold them hostage until payment is made to them. Hospitals and schools have been victims of these types of attacks. However, unlike cash, which was favored by thieves in the past, Bitcoin always leaves a trail in the blockchain that investigators can follow.
there are so many events that ask people to submit bitcoin as a condition for release. I think this is a detrimental thing if bitcoin is used to blackmail people and this is a negative thing for those who use bitcoin.
We really don't have any proof or idea about this type of situition, however it could be possible too because bitcoin is anonymous, and this is the safest way for them to recieve and send money.