I got a job offer and applied for visa but it got rejected due to security reasons

Dear Questioner,

There could be different reasons for the rejection, such as: If your visa application had any typo errors in name, passport number, profession code and other particulars like date of birth, passport issuance and expiry (less than 6 month), then the application may get delayed or rejected.

Please ask the company that submitted your visa application to contact immigration, to know the exact reason for rejection.

Regards