Authenticate -

To prevent unauthorized access, protect against identity theft, and secure data integrity. 2. Legal & Evidence Context

Determining the authenticity of a physical object, such as art, antiques, or historical documents. authenticate

To authenticate means to prove that something—a user, a document, or a piece of evidence—is genuine, real, and not a forgery or a copy. It is the essential process of verifying the identity of a user, process, or device, usually as a prerequisite to allowing access to resources in an information system. To prevent unauthorized access

Using SPF, DKIM, and DMARC to prove an email came from a legitimate source, preventing spoofing. protect against identity theft