December 23 news, Binance co-founder Zhao Changpeng tweeted yesterday, "Recently I've seen some people receiving cryptocurrencies by accepting private keys or hardware wallets. This is a bad idea because the giver still has access to those cryptocurrencies. You should transfer the cryptocurrencies to an address you own, or better yet, just let the giver send it to an address you own. Allowing two people to access the same private key (or mnemonic phrase) is a bad idea. When these cryptocurrencies are moved (or stolen by hackers), it is almost impossible to prove who moved it (or was hacked)."