What Attacker can achieve if he got Relayer Private Key via Dorking?

Security
#1

Hi there,

Recently I found a Leak Relayer Private key But after using this key I didn’t find any Eth Balance =0

Is there any other technique attacker can impact such company except stealing Crypto?

Thanks in Advance for explaining the impact

#2

What is Dorking and how did you find this private key?