Attestation is a professional engagement where an independent qualified expert, usually a CPA, auditor, or authorized assessor, provides an official opinion on specific statements, controls, or processes declared by an organization. Unlike certification, attestation focuses on verification and validation of specific assertions that are usually financially related but may also be security or operational-related.
In the course of an attestation engagement, the attesting professional gathers evidence about the subject matter (usually following the relevant auditing or assurance standards) and performs tests. Examination of documentation, control testing, risk assessment, and veracity of management’s claims are examples of such work. The final product of this work is the attestation report, which provides support of the expert’s opinion that the controls or statements that have been reviewed are reliable and have been implemented effectively.
Examples include SOC 1, SOC 2, and SOC 3 reports, cybersecurity attestation reports, and financial attestation statements. These reports are descriptive and informative, offering transparent insight into the organization’s internal control environment. Hence, these reports act as a trust bank widely relied on by clients, partners, regulators, and investors.
Through the provision of strongly independent and objective assurance on the issue of concern, attestation becomes a major lever in the trust-building process and a very useful instrument in today’s compliance and risk management landscape.