It is reported that exchanges began to freeze accounts for having been on the accounts of a "dirty" Bitcoin. Moreover, we are talking about Binance and about the Bitcoin, which was there 5 months ago.
![Sad](https://bitcointalk.org/Smileys/default/sad.gif)
Thus, exchanges can freeze any amount of funds in order to cover cash gaps simply by tinkering with their user's transaction history. If suddenly a user once bought from someone a “dirty” BTC on OTC, send it on the exchange and then conducted operations with other BTC there for a long time, then at one moment he can get a ban and the exchange can don't give him money as much time Exchange wants.
![Embarrassed](https://bitcointalk.org/Smileys/default/embarrassed.gif)
I think it can affect everyone. so I share this info with you guys because I recommend you hold your money ONLY in your own wallets! so be careful and Happy New Year!
for long-term holders they can keep their money in personal wallets for a long time, but for most traders they cannot keep their money in their wallets and stop trading. I think these incidents are rare, and the exchange will have appropriate policies to avoid affecting users