Final answer:
An attestation service is when a CPA is hired to report on the integrity of financial statements.
Step-by-step explanation:
When a CPA is hired to report on the integrity of financial statements, which may include financial forecasts or reports on financial reporting processes, it is considered an attestation service. An attestation service is a type of assurance service where a CPA provides an opinion or conclusion on the reliability or trustworthiness of certain information.