Cold storage is not prone to attacks online, the only risk of security for cold wallets is that it is physically stolen from you. Unlike Coinbase which locks some users accounts, you can access your funds anytime. You have to watchful because cold wallet are far more inconvenient when you are trading.
I understand that the online platforms are prone to cyber attacks but doesn’t the FDIC insurance make that a non issue? The frozen accounts thing is concerning. I wonder the reason?
Every person who has bitcoin will know where they can store their bitcoin, whether they will use online platforms or cold storage or a temporary wallet. I am not sure if the FDIC insurance can help them get their funds back once their account gets hacked by the cyber attacks. If that is our money, we need to know how to store the funds in a safe wallet, and we do not have to use the third party services, especially not using the online platforms because we do not know if they can always protect their member accounts or not in the future.