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Attackers Passed DKIM and Hit 67,000 Inboxes in 3 Hours. We Scanned 666,803 Domains to See Why DMARC Didn't Stop Them
Microsoft's Q2 2026 report shows attackers passing DKIM at scale — 67,000 inboxes hit in 3 hours via Amazon SES. A daily scan of 666,803 Tranco top-1M...