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View all articlesUS 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.
Read moreDMARCDMARC in Germany: where the top 250 companies stand
Only 44.8% of Germany's top 250 companies enforce DMARC at p=reject, and 32% have no real email protection. See the gaps, the NIS2 angle, and the fixes.
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Email Security Weekly
July 20, 2026
What's happening in email security: July 13 – July 19, 2026
LastPass warns of a lookalike-domain phishing campaign, Microsoft patches another crafted-email Exchange OWA flaw, and a Claude for Chrome bug could trigger Gmail reads.
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July 13, 2026
What's happening in email security: July 6 – July 12, 2026
A phishing email pivots to a fake Teams IT-support call delivering EtherRAT, Robinhood callback phishing skips links entirely, and device-code phishing keeps evolving.
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July 6, 2026
What's happening in email security: June 29 – July 5, 2026
ToddyCat's Umbrij abuses OAuth to read corporate Gmail past MFA, Turla phishes Ukrainian targets with malicious RDP files, and Apple's Hide My Email can be unmasked.
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