You should be specific and fully explain this, I don't trust centralized exchanges I worry every time I trade and deposit on a centralized exchange so do your diligence and always check the status of the CEX you're trading, and on a decentralized exchange, I have to be careful as some scammers are good at manipulating and imitating tokens that you're trading, you have to be fully aware if the token you are trading is the token you are looking to trade they always have that warning, especially on a new token.
And on the wallet, I don't trust a wallet that is not open-source.