How to test the PDI(SDK) solution(Customer Specific/MCS) for performance,security risk??

Hi Experts,

When we develop customer specific solution or multi customer solution in SAP Cloud Application Solution. How can we test the solution for performance or security risks.

How we will have code scan of the solution if we developed a connector to third party with SAP C4C how can we test the performance/Security test of the connector is there any tool available to test?

Thanks,
Siraj.