Binance co-founder CZ posted on the X platform that he recently saw some people receiving cryptocurrencies by receiving private keys or hardware wallets. This is a bad idea because the donor still has access to these cryptocurrencies and should transfer them to their own address, or better yet, simply have the donor send them to their own address. Allowing two people to access the same key (or mnemonic) is a bad idea. When these encryption files are moved (or stolen by hackers), it is almost impossible to prove who moved them (or was hacked).