We recently handled an interesting case on HEDD help.
An enquiry was returned not verified. As is standard procedure under these circumstances, we asked the enquirer to request a copy of the certificate from the candidate so we could double check the records.
The result was interesting because the enquirer got back in touch to tell us that the case would no longer be pursued. The simple act of requesting a certificate from a candidate had prompted the fraudulent candidate to re-think their deception.
A tremendously powerful tool in the fight against degree fraud: Call their bluff!