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2026 healthcare email security report
What 2025 breach data reveals about risk heading into 2026
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REPORT
2025 healthcare email security report
Key insights from 180 email-related healthcare breaches and actionable steps to protect your organization.
REPORT
2025 healthcare email security report
Key insights from 180 email-related healthcare breaches and actionable steps to protect your organization.
Top takeaways
Our 2026 Healthcare Email Security Report analyzed 170 email-related breaches from January through December 2025, uncovering critical security issues, often due to systemic misconfigurations.
170
170 healthcare email-related breaches were reported in 2025
53%
53% of healthcare breaches occured on Microsoft 365, up from 43% in 2024.
41%
41% of orgs were assessed as high risk in 2025, up from 31% in 2024.
74%
74% of breached domains had ineffective DMARC protection in 2025, a major jump from 65% in 2024.
Key resources
COMPLETE REPORT
The 2026 healthcare email security report
What 2025 breach data reveals about risk heading into 2026
EXECUTIVE SUMMARY
2026 healthcare email security report
Email breaches dropped in 2025, but the organizations still getting hit have weaker security than ever. Here's what the data shows.
INFOGRAPHIC
Why old gaps in email security lead to new breaches
The same misconfigurations keep showing up year after year. This infographic breaks down where healthcare email security is falling short.
EXCERPT
Security gaps observed across breached organizations
Most breached organizations share the same foundational gaps in authentication, sender validation, and transport security.
EXCERPT
Microsoft 365 and the reality of shared responsibility
Over half of breached organizations relied on Microsoft 365. Misconfiguration is a bigger problem than platform choice.
EXCERPT
What effective email security looks like in 2026
As AI tools change how staff handle sensitive information, email security that depends on human judgment won't keep up.