Jeremy Windmiller

Microsoft Security Matters Newsletter – August 2026 Edition

Hello everyone,

Welcome to the Microsoft Security Matters Newsletter – August 2026 Edition. Below is a curated roundup of Microsoft security updates, organized by topic to help you quickly find the news most relevant from the past month.

General

  • Secure by default: Trusted Launch as Default is now Generally Available (2026-08-03, Microsoft Security Blog)
    We are excited to announce that Trusted Launch as Default (TLaD) is now Generally Available for new Azure Generation 2 (Gen2) virtual machines (VMs) and virtual machine scale sets. With this milestone, new Gen2 deployments come up with Secure Boot and a…
  • Security Review for Microsoft Edge version 150 (2026-08-13, Microsoft Security Baselines Blog)
    We have reviewed the new settings in Microsoft Edge version 150 and determined that there are no additional security settings that require enforcement. The Microsoft Edge version 139 security baseline continues to be our recommended configuration which can…
  • Microsoft named a Leader in the Frost Radar™: Cloud Workload Protection Platforms, 2026 (2026-08-19, Microsoft Security Blog)
    Microsoft is named a visionary leader in the 2026 Frost Radar for Cloud Workload Protection Platforms, recognized for unified runtime security with Microsoft Defender for Cloud. The post Microsoft named a Leader in the Frost Radar™: Cloud Workload…
  • The patch window is collapsing: Why security needs a new control plane (2026-08-25, Microsoft Security Blog)
    Organizations need protection that operates in the gap between discovery and remediation. The post The patch window is collapsing: Why security needs a new control plane appeared first on Microsoft Security Blog .
  • ​​​​​​What’s new in Microsoft Security: August 2026 (2026-08-27, Microsoft Security Blog)
    This month’s updates provide new capabilities to help organizations gain insights into agent activity, expand security coverage across supported environments, and enhance security management across their environments. The post ​​​​​​What’s new in Microsoft…
  • What’s new in Microsoft Intune – August (2026-08-27, Intune Blog)
    At scale, endpoint management becomes a different job. A two-minute task on one device can become months of work across thousands of devices. Organizations can’t add headcount every time the device estate grows. They need repeatable processes that give IT…
  • TerminalFix campaign deploys a reverse tunnel through multistage intrusion (2026-08-29, Microsoft Security Blog)
    Microsoft Threat Intelligence provides analysis of a ClickFix campaign that uses fake CAPTCHA prompts, DLL sideloading, and a reverse tunnel, with detections and hunting guidance. The post TerminalFix campaign deploys a reverse tunnel through multistage…
  • Security baseline for Microsoft Edge version 151 (2026-08-31, Microsoft Security Baselines Blog)
    We are pleased to announce the enterprise-ready release of the security baseline for Microsoft Edge version 151! We have reviewed the settings in Microsoft Edge version 151 and updated our guidance with six new recommendations. We have also identified one…

AI Security

  • From AI Experiments to Digital Workforce: Do Enterprises Need a Chief Agent Officer? (2026-08-03, Microsoft Security Blog)
    As organizations move from deploying a handful of AI copilots to managing fleets of task-specific agents, a new challenge is emerging – Ownership. Today’s AI agents can do far more than answer questions. They can access enterprise data, invoke tools…
  • Why AI Agents May Require a New Security Operations Model (2026-08-03, Microsoft Security Blog)
    Organizations are rapidly adopting AI agents to retrieve data, invoke tools, automate workflows, interact with applications, and increasingly make decisions on behalf of users. As these agents become part of the enterprise workforce, they introduce an…
  • When AI infrastructure becomes the target: Securing gateways and control points (2026-08-26, Microsoft Security Blog)
    Microsoft Threat Intelligence examines attacks on exposed AI workloads, including LiteLLM gateway exploitation, credential harvesting, persistence, and cryptomining activity. The post When AI infrastructure becomes the target: Securing gateways and control…

Agent 365

  • MCP safety & evaluation with the Agent 365 CLI & Agent Governance Toolkit (2026-08-10, Microsoft Security Blog)
    Co Author: JiteshThakur​ AI agents are useful because they can act. They call tools, query databases, send messages, and hand work to other agents. That same freedom creates a problem: access control can tell you which service an agent may reach, but it…

Azure Security & Defender for Cloud

  • Microsoft Defender for Cloud Customer Newsletter (2026-08-03, Defender for Cloud Blog)
    *This will be the last monthly MDC newsletter. To keep up with the latest, please visit: What’s new in MDC What’s new in Defender for Cloud? Multiple container security features are now Generally Available: Container-level misconfiguration recommendations…

Microsoft Entra

  • End VPN gaps with identity-first access (2026-08-05, Microsoft Entra Blog)
    Traditional VPNs extend network access—but they were not built continuously evaluate identity, device posture, location, user risk, or session context. That gap can leave AI apps, SaaS, on-premises applications, unmanaged services, and internet traffic…
  • Microsoft Entra Tenant Governance is now generally available (2026-08-10, Microsoft Entra Blog)
    Today, we’re excited to announce the general availability of Microsoft Entra Tenant Governance, a built-in capability that helps organizations centrally govern and secure multi-tenant environments at scale. Why centralized tenant governance matters Tenants…
  • What’s New in Microsoft Entra: August 2026 (2026-08-10, Microsoft Entra Blog)
    Hello everyone, I’m Yina Arenas. I’m honored to have joined Microsoft Security as the CVP and Chief Product Officer of Identity and Network Access and to introduce myself to the legendary Microsoft Entra community. Having spent much of my career focused on…
  • How to enforce Zero Trust across every resource (2026-08-12, Microsoft Entra Blog)
    This post builds on the strategic foundations introduced in End VPN gaps with identity-first access . Read the strategic overview to understand why Zero Trust must apply to every resource before diving into implementation. TL;DR: Your quick guide Reduce…
  • Why Active Directory alone is no longer enough (2026-08-13, Microsoft Entra Blog)
    Most organizations have moved their applications, devices, and business processes to the cloud, but identity often remains dependent on Active Directory. That gap can increase operational complexity, limit modern security controls, and slow the adoption of…
  • Microsoft Entra ID enhances security of branded sign-ins (2026-08-19, Microsoft Entra Blog)
    To align with Microsoft’s Secure Future Initiative and its focus on identity security and phishing resistance, we’re evolving Microsoft Entra custom branding to help customers deliver sign-in experiences that are more secure, reliable, and consistent…
  • One SOC, Many Tenants: Centralizing Microsoft Sentinel with Azure Lighthouse (2026-08-31, Microsoft Security Blog)
    Most large organizations don’t live in a single Microsoft Entra ID tenant. Acquisitions, regulatory separation, sovereignty mandates, and mission boundaries all multiply tenants over time. For a security operations team, that sprawl creates one hard…

Defender XDR & Sentinel

  • Building a CCF Nested API Pull Connector: A Technical Lab Walkthrough (2026-08-05, Microsoft Sentinel Blog)
    This post walks through building a Microsoft Sentinel Codeless Connector Framework (CCF) RestApiPoller connector that uses the nested API polling pattern. The nested pattern exists for a specific reason: many enterprise APIs do not return enriched records…
  • Monthly News-August 2026 (2026-08-05, Microsoft Threat Protection Blog)
    Microsoft Defender Monthly news – August 2026 Edition This is our monthly “What’s new” blog post, summarizing product updates and various new assets we released over the past month across our Defender products. In this edition, we are looking at all the…
  • AI-powered playbook generator, now available to more customers (2026-08-07, Microsoft Sentinel Blog)
    We’re excited to announce we’re making it easier than ever to go from intent to action with the AI-powered playbook generator now available to more customers. What’s new All Microsoft Sentinel customers in Defender portal can now create AI-generated…
  • Public Preview: Nested API Support Comes to Microsoft Sentinel CCF (2026-08-07, Microsoft Sentinel Blog)
    Microsoft Sentinel continues to evolve its capabilities to support an expanding ecosystem of partners and data integrations. Recent innovations include the Codeless Connector Framework (CCF) Push feature , the new Sentinel connector builder agent , and the…
  • Building Microsoft Sentinel Connectors in Minutes with the Sentinel Connector Builder Agent (2026-08-11, Microsoft Sentinel Blog)
    Overview We previously announced the public preview of the Microsoft Sentinel connector builder agent via VS code extension, that helps developers build Microsoft Sentinel codeless connectors faster with low-code and AI-assisted prompts. This post walks…
  • Smarter signals, broader coverage: UEBA anomalies on top of Behaviors layer and new data sources (2026-08-18, Microsoft Sentinel Blog)
    Co-authors: Ron Shlomo and Ryan Smith Security teams don’t struggle with a lack of security signals. The real challenge is understanding which activity matters, why it stands out, and where to focus first. Microsoft Sentinel’s Behaviors layer already helps…
  • Introducing Multi-Account Support for Connectors in Microsoft Sentinel (2026-08-31, Microsoft Security Blog)
    We’re excited to announce that Microsoft Sentinel’s data connectors for Auth0, CrowdStrike Falcon, and Salesforce Service Cloud now support multi-account ingestion — enabling you to connect and monitor multiple accounts or tenants from a single, unified…
  • What’s new in Microsoft Sentinel: August 2026 (2026-08-31, Microsoft Sentinel Blog)
    Welcome back to What’s new in Microsoft Sentinel. This August, Sentinel innovation kicks off with the AI-powered playbook generator, generally available to all Sentinel customers in the Microsoft Defender portal. Meanwhile, User and Entity Behavior…

The best defenders are not just reacting to threats – they are continuously learning, improving, and sharing what works.

Thank you,

Jeremy Windmiller Security – GBB | CISSP, CEH, ITIL | Microsoft