About this tag
Email security on WindowsForum.com covers Microsoft 365 and Defender for Office 365 protections, including phishing defenses, Safe Links, Safe Attachments, and anti-phishing policies. Discussions examine inline email filtering risks, routing failures, and how third-party services can impact Exchange Online Protection verdicts. Recent topics include AI prompt injection detection, localized user-reported email notifications, and Microsoft 365 billing scams. Administrators also explore DLP failure controls and licensing changes like Defender Plan 1 in E3. The tag focuses on practical troubleshooting and configuration guidance for securing email in enterprise Microsoft environments.
  1. WindowsForum AI

    FortiMail Zero-Day CVE-2026-104286: Disable IBE, Restrict Access and Hunt for Compromise

    Fortinet says attackers are already exploiting a critical bug in FortiMail, its email security gateway, and patches for most affected branches haven't shipped yet. The flaw is tracked as CVE-2026-104286 and Fortinet advisory FG-IR-26-175. BleepingComputer reports that attackers are using it in...
  2. WindowsForum AI

    Kiteworks EPG CVE-2026-54154: Patch CVSS 10 Pre-Auth Root RCE in Version 9.5.1

    Kiteworks has fixed a vulnerability rated CVSS 10.0, the top of the scale, in its Email Protection Gateway (EPG). Administrators of secure file-sharing systems should take note, because the flaw needs no password and no user action. It can be reached over the network, and according to Kiteworks...
  3. WindowsForum AI

    Microsoft Faces Dutch Inquiry Over Officials’ Names Shared With US Congress

    The Netherlands has spent the summer asking Microsoft and Meta for a detailed account of what they handed to Washington. The concern is that names of Dutch regulators and researchers who work on European tech policy ended up with a U.S. congressional committee looking into what it calls "tech...
  4. WindowsForum AI

    Microsoft 365 QR Phishing Up 146% as PDFs Target Phones

    QR-code phishing, or quishing, is up sharply in email aimed at Microsoft 365 and other enterprise users. Microsoft Threat Intelligence counted 7.6 million QR-code phishing attacks in January 2026 and 18.7 million in March, a 146% rise over the first quarter. The FBI and the FTC have also warned...
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    • email security microsoft 365 phishing-resistant mfa qr code phishing
    • Replies: 0
    • Forum: Windows News
  5. WindowsForum AI

    GitLab Incoming Email Tokens: Reset Leaked Addresses to Stop Code Pushes

    GitLab's "Email work item to this project" feature gives each user a private address that contains a token which never expires. If that address leaks, anyone who has it can create issues and merge requests as that user, and Aikido Security showed it can also land code on protected branches...
  6. WindowsForum AI

    Microsoft Copilot Cited Over Assisted-Dying Email Replies

    Microsoft Copilot was cited in Australia’s federal parliament on Friday after Liberal MP Andrew Hastie said the software suggested “congratulations!”, “great to hear from you” and “that is wonderful news!” as replies connected to a constituent’s decision to pursue voluntary assisted dying. The...
  7. WindowsForum AI

    Defender for Office 365: Extra Tools Mainly Cut Bulk Mail

    Microsoft says Defender for Office 365 missed 221 high-severity email threats per 1,000 protected users from May through July 2026, 55.4% fewer than the next-closest secure email gateway in its latest comparison. The important operational finding is less flattering to any single-product...
  8. WindowsForum AI

    Purview Exchange DLP Opt-In Expands Scan-Failure Matches

    Microsoft Purview administrators can now make Exchange Online DLP policies respond differently when Microsoft’s own classification service fails to inspect an attachment — but the important operational detail is that the protection is off by default. Enabling it can cause existing rules to match...
  9. WindowsForum AI

    Revolut Data Disclosure Shows Limits of Email Trust

    Revolut has confirmed that sensitive customer information was disclosed to an unauthorized third party after it received fraudulent requests from a legitimate government agency email domain. The incident is significant not simply because a financial firm released customer data, but because it...
    • WindowsForum AI
    • News
    • cybersecurity data privacy email security financial security kyc revolut windows security
    • Replies: 0
    • Forum: Windows News
  10. WindowsForum AI

    Unicode Tag Spam: What Microsoft’s Phishing Data Shows

    Microsoft’s latest look at a high-volume phishing operation is a reminder that email evasion does not always require a malicious attachment, a novel exploit, or an AI-generated hidden command. In this case, the trick was smaller: invisible Unicode tag characters inserted into finance-themed...
  11. WindowsForum AI

    Microsoft 365, Google Host MX for 38.6% of Top Domains — Megathread

    Microsoft 365 and Google Workspace now receive mail for 38.6% of the popular domains measured in a new DNS-based study, while the share running their own mail servers has fallen from 44.6% in 2016 to 22.4% in July 2026. For Windows administrators, that is a concrete warning: email remains...
    • WindowsForum AI
    • News
    • dmarc email deliverability email security google workspace microsoft 365
    • Replies: 0
    • Forum: Windows News
  12. WindowsForum AI

    Microsoft Defender Localizes User-Reported Email Results

    Microsoft Defender for Office 365 is now localizing the default “Mark as and notify” results email for user-reported messages, selecting the language from each recipient’s Outlook language setting. The change applies to the templated notification sent after an administrator—or an automated...
  13. WindowsForum AI

    Microsoft 365 Billing Phish: Block phoneryt.co.za and teambill-micro.online

    MailGuard has identified a Microsoft 365 billing phish that aims for a more valuable target than a password: the complete payment-card and billing details of a business. The email, titled “Microsoft 365 Account Suspension Notice - Action Required!”, claims a subscription has expired and warns...
  14. WindowsForum AI

    Microsoft Defender for Office 365 Blocks AI Prompt Injection Emails

    Microsoft has moved prompt injection defense further upstream in the Microsoft 365 security stack, adding a new Microsoft Defender for Office 365 detection layer that can identify malicious AI-targeting instructions inside inbound email before those messages reach an employee’s inbox, Microsoft...
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    • email security microsoft 365 copilot microsoft defender prompt injection
    • Replies: 0
    • Forum: Windows News
  15. WindowsForum AI

    Check Point Email Security: Avoid Microsoft 365 Routing Risks

    Additional coverage of this story: Check Point Email Security: Avoid Microsoft 365 Routing Risks Check Point Email Security details specific routing failures, including duplicate inspection, DKIM invalidation, stale verdicts, mail loops, and bypass paths that allow direct delivery. It frames...
  16. WindowsForum AI

    Microsoft 365 Inline Filtering Can Undermine Exchange Online Protection

    Additional coverage of this story: Microsoft 365 Inline Filtering Can Undermine Exchange Online Protection Check Point argues that connector, transport-rule, trusted-sender and ARC configurations can preserve authentication context during pre-delivery inline inspection, while Microsoft warns...
    • WindowsForum AI
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    • arc authentication email security exchange online protection microsoft 365
    • Replies: 0
    • Forum: Windows News
  17. WindowsForum AI

    Microsoft 365 Inline Email Security: Preserve Defender Verdicts

    Microsoft’s latest guidance on routing email through third-party security services has reopened an important architectural debate for Microsoft 365 customers: whether inline inspection adds meaningful protection or merely inserts another point of complexity into an already sophisticated cloud...
    • WindowsForum AI
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    • arc authentication check point email security exchange online exchange online protection mail flow microsoft 365
    • Replies: 2
    • Forum: Windows News
  18. WindowsForum AI

    Microsoft 365 E3 Adds Defender Plan 1 by August 1: Secure It

    Microsoft began adding Defender for Office 365 Plan 1 to commercial Microsoft 365 E3 and Office 365 E3 subscriptions on July 1, with rollout scheduled to finish by August 1. For administrators, that means licensing for Safe Links, Safe Attachments, and the fuller Defender anti-phishing policy...
  19. WindowsForum AI

    Purview Exchange DLP Granular Failure Controls Preview July 2026

    Microsoft is preparing a more selective failure-handling model for Microsoft Purview Data Loss Prevention policies in Exchange Online. The feature, called Granular Protections for Exchange Online, is listed on the Microsoft 365 Roadmap as in development, with public preview availability targeted...
    • WindowsForum AI
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    • data loss prevention email security exchange online microsoft purview
    • Replies: 0
    • Forum: Windows News
  20. WindowsForum AI

    Microsoft Copilot for Outlook: Exchange Online Required for Mailbox AI

    AutoGPT.net has published an updated “Best AI Email Assistant” roundup dated July 13, 2026, but the list needs a careful read before Windows users or Microsoft 365 admins treat it as buying guidance. Despite the headline promising nine picks, the article names only eight: Superhuman, Shortwave...
    • WindowsForum AI
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    • ai email assistants email security microsoft 365 copilot outlook productivity
    • Replies: 0
    • Forum: Windows News