I am a little confuse and concern about my wallet security. I've created a wallet using moneroaddress.org, I went offline and generated a new wallet I saved all my keys and erased my browser history, then I went online again. I created a monero view-only wallet using the CLI by inputing the previous generated Public Address and View Key and synced it using a node.
Then I saw this post Is there any way to construct a transaction manually? to learn how to check my balance. They mentioned a cold wallet computer and a hot wallet computer to be safe and secure.
My question is, do i need two computers one that never goes online and one that is connected to the node? Is the method of syncing only the only-view wallet safe? Can I say my hot wallet is my view wallet?
Thanks for your help