Can the social security fraud company find out?

If you really want to check, you can definitely find out. You can call the insured place 12333 indicated on the information of the parties during working hours to check the authenticity.

Legal basis:

Article 26 of the Labor Contract Law of People's Republic of China (PRC) * * * unit may terminate the labor contract concluded with you. If the revised part does not belong to the main basis for the formation of labor relations, it is useless for the employer to know. In short. If the position requires work experience, the unit can terminate the labor contract signed with you. You don't need any compensation yet.