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.
Customer Support Email Security: How to Stop Fake Replies, Account Takeovers, and Data Leaks
Blog, Email SecurityCustomer support email security guide: stop phishing, fake replies, account takeovers, and data leaks targeting your help desk inboxes. Best practices inside.
Malicious MCP Servers & Email Security: The New Supply Chain Threat
Blog, Email SecurityThe postmark-mcp incident exposed a new category of threat: malicious MCP servers silently exfiltrating emails at scale. Learn how AI supply chain attacks target email infrastructure — and how DMARC and email authentication protect you.
AI Agent Security: Risks, Best Practices, and Email Authentication
Blog, Email SecurityAI agents introduce serious cybersecurity risks - from prompt injection to email spoofing. Learn how to secure agentic workflows with least-privilege access, audit logging, and DMARC enforcement.
compauth=fail: Microsoft Composite Authentication Explained
Blog, Email Securitycompauth=fail in your email headers means Microsoft’s composite authentication rejected your message. Learn what it is, what each reason code means, and exactly how to fix it.
What is Email Forwarding? How It Works and Best Practices
Blog, Email SecurityEmail forwarding is simple to set up — but it silently breaks SPF, DKIM, and DMARC. Learn how forwarding works, why it causes delivery failures, and the best practices to prevent them.
