Email Security
The latest Email Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft Tightens Rules for Third-Party Email Filters: What It Means for Your Inbox Security
Microsoft has released reinforced guidance for organizations routing Microsoft 365 email through third-party security services, warning that misconfigured connectors and inline scanning can break...
E3’s Email Security Upgrade Lands by August 1—Here’s Your Setup Playbook
Microsoft has begun rolling out Defender for Office 365 Plan 1 into commercial Microsoft 365 E3 and Office 365 E3 subscriptions, with completion expected by August 1, 2026. The change hands advanced...
Exchange Online DLP to Get Granular Failure Handling: Preview Starts This Month
Microsoft is gearing up to release a long-awaited refinement to its Data Loss Prevention (DLP) engine in Exchange Online: the ability to craft distinct policies for different types of content-scan...
Microsoft Copilot’s Outlook AI Requires Exchange Online — And That Changes Everything
A widely shared roundup of the “best AI email assistants” for 2026, published by AutoGPT.net on July 13, is missing a detail that matters enormously to the millions of people who live in...
ZDNET's 'Tested' Email Hosting Picks: What They Didn't Show You
In early 2026, ZDNET published its latest guide to the best email hosting services for small businesses, presenting the recommendations as the outcome of rigorous, hands-on testing and expert...
Microsoft to Lock Down Copilot’s External Email Access with Purview DLP in June 2026 Preview
Microsoft plans to tighten data governance for its AI assistant by introducing a new Purview DLP control that explicitly prevents Microsoft 365 Copilot from processing emails originating outside the...
Barracuda Unveils AI-Powered Email Protection with Post-Delivery Cleanup for Microsoft 365
Barracuda Networks has taken a decisive step into the post-delivery email security arena with the June 2026 launch of Barracuda Integrated Email Protection, a cloud-native service engineered to hunt...
Microsoft's Agentic Enterprise Platform Unifies AI Agent Governance Across M365, Azure, and Security
Microsoft is quietly piecing together a comprehensive “agentic enterprise” platform that promises to weave AI agents into the very fabric of corporate computing—and then govern them with an...
Stop CEO Impersonation in Microsoft 365 with Layered Security Beyond Filters
A newly syndicated guide on Security Boulevard, authored by email security provider IRONSCALES and published June 1, 2026, is sounding the alarm on a persistent threat that continues to evade...
Microsoft Composite Authentication: Why DMARC Alone Fails Modern Phishing Attacks
A recent surge in spoofed Microsoft 365 emails slipped past standard DMARC filters, reigniting the debate over how trustworthy the gold-standard email authentication protocol truly is. The twist?...
Exchange Admins: Patch CVE-2026-42897 Spoofing Flaw in May 2026 Update
Microsoft’s May 2026 Patch Tuesday brought a critical disclosure for Exchange administrators: CVE-2026-42897, a spoofing vulnerability in Microsoft Exchange Server. This security flaw could allow...
Microsoft Reports 8.3 Billion Email Phishing Threats in Q1 2026, QR Codes and CAPTCHAs Surge
Microsoft's threat intelligence teams detected approximately 8.3 billion email-based phishing threats in the first quarter of 2026, a staggering volume that underscores the accelerating scale of...