This presentation covers my experiences combatting phishing and fraud using DMARC and assorted other techniques in a large eBay-like platform for a niche market...when the site previously did everything over direct user email...for over a decade. Good times.
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ANNOUNCEMENT: At BSides on October 28th, 2023 I announced the upcoming Q1 2024 private beta of dmarcSTAR, a service that approaches DMARC in what I believe is the ideal manner after over a decade of experience with the specification. Read more at dmarcSTAR.com.
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