How to Read DMARC Reports Before You Move to p=reject
Most domains that have DMARC at all are sitting on p=none. Someone added the record while setting up email, pointed rua= at a mailbox, and the reports have been arriving every day since: small zip and gzip attachments from Google, Outlook and other receivers, usually unopened. Those files answer the one question you need settled before tightening the policy: who is sending mail with your domain in the From line, and would that mail survive p=quarantine or p=reject? Below is how to read them with
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.