How to determine a good account when writing a brute in Delphi?

Question

Delphi

How to determine a good account when writing a brute in Delphi?

Answer 1

Brute checks the account for validity, and a condition is created. If the account works, then it is good, if not, then it's bad. If you are going to use brute for many accounts at once, then I advise you to enable multithreading.

Answer 2

How to determine? yuzat synchronization in multithreading.