How do hackers keep checking different passwords against the leaked hash-key without getting shut out after x attempts?

Question

If they don’t know the function generating the hash-key, what do they test it against? I assume every website uses a unique function for converting passwords into keys.

In: Technology

Answer 1

They would usually use a known function, it is the hash itself which is the somewhat secret information. Once they have the hash they can test against it on their own machines, there is nobody to lock them out.