The password that the “hacker” is trying to get. Do you use a password that none can guess and is not used at different sites?
I know it’s possible to get the password. But most times people use so called dictionarys, which mean passwords that have been found and then maybe they use a tool to change different phrases.

If you have a password with big and little letters mixed with numbers and special characters and isn’t less than 8 in length, you should be safe.