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View all articlesRed Sift now integrates email authentication data into Microsoft Sentinel
Red Sift OnDMARC now streams forensic data and audit logs into Microsoft Sentinel, so security teams can investigate email authentication inside their SIEM.
Read moreEmail SecurityUS DMARC adoption: 5,000 domains ranked by state
Red Sift analyzed DMARC adoption across 5,000 US domains in 49 states and D.C. Only 38.4% block spoofed email. See the full state ranking and sector data.
Read morepost-quantumEffect of post-quantum algorithms on networking performance
ML-KEM and ML-DSA don't cost much extra CPU, but they add real round trips. Here's how post-quantum handshakes change TLS latency, congestion windows, and middlebox behavior.
Read morepost-quantumPost-quantum key establishment, ten years later
Post-quantum key establishment is now standard in TLS 1.3, but only 11% of origin servers are protected. Here's where hybrid ML-KEM adoption really stands.
Read moreDNSHow open zone transfers expose your internal network
An open DNS zone transfer hands attackers a map of your network in one query. Here's what it reveals, and how Red Sift ASM keeps your organization safe.
Read morepost-quantumWhy post-quantum signatures are breaking TLS handshake limits
Post-quantum signature sizes are up to 34x larger than ECDSA. Here's why ML-DSA certificate chains blow past the 14.5 KB TCP congestion window.
Read moreCertificatesLet's Encrypt webinar recap: Adapting to shorter certificate lifecycles and PKI changes
Certificate lifetimes are dropping to 47 days by March 2029. Get the scoop from leading certificate authority, Let's Encrypt, on what shorter TLS certificate lifespans mean for automation, inventory, plus, how Red Sift Certificates can help.
Read moreAI & SecurityIntroducing Radar Lite's new Claude and ChatGPT integrations
Red Sift Radar Lite now integrates natively with Claude and ChatGPT, so your team can run email, DNS, and web security checks inside the tools it already uses.
Read moreDMARCDMARC in Ireland: where the biggest companies stand
Red Sift checked DMARC across 200 of Ireland's biggest companies. Multinationals sit at 63% enforcement and Irish-founded firms at 39.6%. See the full data.
Read moreProduct UpdatesRed Sift's Quarterly Product Release: Summer 2026
Summer's here, and so is a batch of updates from our product and engineering teams.
Read moreDNSDangling DNS: how to find and fix it before takeover
Dangling DNS is easy to create and hard to spot. OWASP and AWS both flag it. Here's the risk, what each says, and how to find and fix it across your estate.
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Email Security Weekly
October 12, 2026
What's happening in email security: October 5 - October 11, 2026
Nikkei's compromised mailbox sends 9,000 phishing emails, attackers hijack three ccTLD registries for real Google certificates, and AI-polished invites front a Google AitM kit.
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October 5, 2026
What's happening in email security: September 28 - October 4, 2026
Forged iCloud senders passed DMARC, a p=none policy waved a China-nexus spear-phish into the inbox, and a FortiMail zero-day was exploited before fixed builds shipped.
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September 28, 2026
What's happening in email security: September 21 - September 27, 2026
Microsoft disrupts the EvilTokens device-code phishing service, a pre-auth Roundcube flaw patched in May is now reported exploited, and a leaked GitLab email address can push code to main.
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