NIST SP 800-81r3: DNS Security Guidelines for Email
Blog, Email SecurityNIST published SP 800-81r3 in March 2026 — the first update to its DNS security guide in 13 years. Here's what the new guidance means for DNSSEC, protective DNS, and your DMARC, SPF, and DKIM setup.
How Email Spoofing-as-a-Service Works and How To Stop It
Blog, Email SecurityEmail spoofing-as-a-service providers typically offer a web-based interface or an API that allows users to create and send spoofed emails.
How to Sell Email Security Services: A Guide for MSPs
Blog, Email SecurityLearn how attackers use phishing reconnaissance to identify vulnerable domains and how to defend against it.
Phishing Reconnaissance: How Attackers Identify and Target Vulnerable Domains
Blog, Email SecurityLearn how attackers use phishing reconnaissance to identify vulnerable domains and how to defend against it.
HR Email and Payroll Security: Best Practices for Global Teams
Blog, Email SecurityLearn how to protect HR email and payroll security across global teams with SPF, DKIM, DMARC, and secure communication best practices.
How to Block High-Risk AI Agents in Microsoft Entra
Blog, Email SecurityLearn how to restrict high-risk AI agents in Microsoft Entra using the built-in user setting and a Conditional Access policy.
