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Microsoft Rejecting Emails Without DMARC? What Every Email Security Engineer Should Know

Microsoft Rejecting Emails Without DMARC? What Every Email Security Engineer Should Know

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7 min read
MTA-STS improves SMTP transport security only when policy caching is understood

MTA-STS improves SMTP transport security only when policy caching is understood

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2 min read
CVE-2026-70571: a stack overflow in Exchange Server, and the mail perimeter that keeps it reachable

CVE-2026-70571: a stack overflow in Exchange Server, and the mail perimeter that keeps it reachable

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3 min read
CVE-2026-104286: What FortiMail Adds to the Mail Gateway Exploitation Trend

CVE-2026-104286: What FortiMail Adds to the Mail Gateway Exploitation Trend

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3 min read
211,018 Zimbra and 62,630 Roundcube Assets: Choosing Which Webmail Surface to Defend First

211,018 Zimbra and 62,630 Roundcube Assets: Choosing Which Webmail Surface to Defend First

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3 min read
45 Million SMTP Services, 3,932 FortiMail Assets: Separating Protocol Exposure From Product Exposure

45 Million SMTP Services, 3,932 FortiMail Assets: Separating Protocol Exposure From Product Exposure

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3 min read
Hunting in the mail path: five hypotheses for CVE-2026-76519 exposure

Hunting in the mail path: five hypotheses for CVE-2026-76519 exposure

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3 min read
An email attachment hands the sender root on Cisco's gateway

An email attachment hands the sender root on Cisco's gateway

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3 min read
45,644 Exchange Servers on HTTP: Measuring a Mail Tier That Cannot Be Hidden

45,644 Exchange Servers on HTTP: Measuring a Mail Tier That Cannot Be Hidden

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2 min read
5,950 secure email gateways on the wire: the CVE-2026-76461 scoping problem

5,950 secure email gateways on the wire: the CVE-2026-76461 scoping problem

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2 min read
FortiMail on the Open Internet: 3,911 Fingerprints and 5,322 Title Matches for a Mail Gateway Under Active Exploitation

FortiMail on the Open Internet: 3,911 Fingerprints and 5,322 Title Matches for a Mail Gateway Under Active Exploitation

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2 min read
CVE-2026-62911 and 22,000 Unpatched Exchange Servers

CVE-2026-62911 and 22,000 Unpatched Exchange Servers

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2 min read
Small Businesses Can Run Professional Email on Aliases Alone

Small Businesses Can Run Professional Email on Aliases Alone

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7 min read
700 US county domains, one DNS record apart from safe

700 US county domains, one DNS record apart from safe

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2 min read
DMARC aggregate reports as infrastructure change detection

DMARC aggregate reports as infrastructure change detection

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2 min read
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