how to detect cyber criminals and protection against black hat hacker

Very good 

​@ROME MPOFU can you provide more information? We have a product docs page that has a wealth of information that you can choose from but you comment/question is too vague. 

Hi ​@ROME MPOFU,

May be work looking at the Chronicle Security Operations Detection Rules on github.

GitHub - chronicle/detection-rules: Collection of example YARA-L rules for use within Google Security Operations · GitHub

Kind Regards,

Ayman