This data processor due diligence checklist provides a comprehensive set of criteria that may be used by data fiduciaries to evaluate and assess the capabilities, practices, and compliance standards of a potential data processor before engaging in a data processing relationship. The checklist includes factors such as the data processor’s security measures, data protection policies, data processing procedures, subcontracting practices, data breach response protocols, data retention and deletion policies, and insurance coverage for data breaches, among other criteria. By using this due diligence checklist as a starting point, a data fiduciary can ensure that a potential data processor meets the basic necessary standards for handling personal data securely and in compliance with legal requirements, thereby reducing risks associated with data processing activities.