Dear friends, as you understand, I use translation. When I translate your questions, the meaning changes.
I didn't buy a wallet, it belongs to me.
A wallet from when Bitcoin first came out
The balance inside is still there but I can't help with the password because I didn't set the password and the pkey is lost.
If it is your own wallet, you should either set its password or leave its unencrypted without a password.
If it was set without a password, was unencrypted, you can access it now.
If you set a password for your wallet, try to bruteforce the password to access your wallet private keys.
You can only brute force your wallet password but can not brute force your wallet private keys because if brute force Bitcoin private keys is possible, many Bitcoin holders already lost their bitcoins to hackers.
Make some copies of your wallet files before trying to brute force its password or use any wallet recovery services.
Bitcoin Wallet Recovery Services - for forgotten wallet passwordhttps://www.walletrecoveryservices.com/Therefore, the person who wants to attack must rely entirely on his own experience.
Sorry but I don't see who wants to attack you with your wallet file.