Most of the time cryptocurrencies are exchanged to fiatcurrencies using P2P , person 2 person.
There are 2 types of issues arising now:
i) Genuinely people make the transition then complain in cyber crime portal they have no knowledge of this trsanction and force the counter party tosettle.
ii) A lot of time scammers create accounts on own name, knowing it will be seized later purchase the crypto from you. Police later traces the amount to you and force you to settle stating the money you got exchanging the assets was fraudulent.
Please help to know what is the defense in both cases.