5. Use strong passwords: Use long and complex passwords for your cryptocurrency accounts, and don't reuse the same password across multiple accounts.
Passwords are for your accounts on online exchanges and for your wallets too. It does not restrict to accounts on exchanges, self custody wallets but is important for your emails as well. Having strong passwords for your emails are helpful to increase security of your accounts on exchanges. It's double layer to prevent hacks and fund steal from your exchange accounts.