When a company is in the process of selecting a new third-party service provider, which of the following BEST ensures that due diligence has been performed?
Deploying a test environment for the third-party's services within the company's infrastructure
Conducting a detailed background check on the third-party service provider's key personnel
Meeting with the third-party's security personnel to discuss their security controls
Reviewing the third-party's financial stability, past security incidents, and industry reputation