77% of advanced email attacks failed SPF, DKIM, or DMARC authentication yet still reached inboxes.
77% of advanced email attacks failed SPF, DKIM, or DMARC authentication yet still reached inboxes. — This cybersecurity statistic was published by StrongestLayer in January 2026. It covers topics including Email Security, Email Threats, Phishing, DMARC. The original data appears in What Your Email Security Can't See . For the full methodology and detailed findings, refer to the original report.
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Frequently Asked Questions
What does this statistic say?
77% of advanced email attacks failed SPF, DKIM, or DMARC authentication yet still reached inboxes. This data was published by StrongestLayer and covers Email Security, Email Threats, Phishing, DMARC.
Where does this data come from?
This statistic comes from What Your Email Security Can't See , published by StrongestLayer on January 13, 2026. You can view the original report at https://www.strongestlayer.com/white-paper/what-your-email-security-cant-see.
What cybersecurity topics does this cover?
This statistic relates to Email Security, Email Threats, Phishing, DMARC. Browse more statistics on Email Security or from StrongestLayer.