Suspicions about false certificates

Answer:

ISO 9001 doesn’t mention what to do when you suspect that someone is using a falsified certificate. If you have suspicions you can start by taking note of the Certification Body (an organization cannot self-grant a certificate). Then, look for the name of the Accreditation Body and check to see if it is a member of the International Accreditation Forum (IAF). If there is no stamp from an Accreditation Body on the certificate then you should be suspicious as to whether the Certification Body is competent to audit.

ISO maintains a page where you can report your suspicions: https://www.iso.org/complaints.html