Quote from: Godlovesyou on Today at 02:00:43 PM

Will someone have access to your wallet without your device but the person manage to see your private keys and copy them without your knowledge. Will the person be able to withdraw your money or change password and block you from having access to your wallet?

The address used to receive coins has a seed phrase. From this address the private key is obtained by the owner and from the coin address the owner can sign messages.

When someone who wants to create a Bitcoin address in a wallet will go through several processes before the address is successfully created.
There is a process in making an address, an order is obtained to save the seed and there is a process for the prospective owner of the address to create a strong password.
Ok. The address was created successfully and the owner of the address allows the address to receive and send coins.

If someone can guess the password and find your address seed, then that person can do as they wish with the coins in your coin address.
That's what I know from what I've tried to make an address on one of the wallets and that's what I've read.

Not Your Keys, Not Your Coins.
Not Your Keys, Not Your Money.