As far as I can remember, it is absolutely necessary to have access to these codes. In most cases, it is not possible to make some transactions, or they are restricted. In the case of ETH, but also other cryptocurrencies, it can be confirmed by e-mail. Following the increase in the price of a cryptocurrency, spam messages that can lead us astray have become current, and for this, we can use phone number search. Recently I received a message to authorize and reconfirm the account where I own the cryptocurrency, and for this, I needed to confirm this on a different page from the original, of course, this was reported, so you can locate the person who sent it.