CIA Brief 20260425

Microsoft 365 Copilot & AI Productivity

• Copilot’s agentic capabilities in Word, Excel, and PowerPoint are generally available — Agent-driven Copilot features for the core Office apps have moved from preview to GA. https://www.microsoft.com/en-us/microsoft-365/blog/2026/04/22/copilots-agentic-capabilities-in-word-excel-and-powerpoint-are-generally-available/(opens in new window)
• Microsoft 365 Copilot readiness and resiliency with SharePoint and M365 Backup — Guidance on preparing SharePoint content and using M365 Backup so Copilot deployments stay resilient. https://techcommunity.microsoft.com/blog/microsoft365copilotblog/microsoft-365-copilot-readiness-and-resiliency-with-sharepoint-and-m365-backupar/4513048(opens in new window)
• Bringing transparency to AI-generated content with watermarks in Microsoft 365 — Microsoft 365 is adding content credentials/watermarks to AI-generated artefacts. https://techcommunity.microsoft.com/blog/microsoft365insiderblog/bringing-transparency-to-ai-generated-content-with-watermarks-in-microsoft-365/4501376(opens in new window)
• Prevent oversharing in Microsoft 365 Copilot (video) — Short walkthrough on stopping Copilot from surfacing content users shouldn’t see. https://www.youtube.com/watch?v=iJUUmQXplv4(opens in new window)
• Microsoft 365 Insider Round-up – April 2026 — Monthly LinkedIn round-up of new Insider features across the M365 suite. https://www.linkedin.com/pulse/microsoft-365-insider-round-up-april-2026-microsoft-365-insider-lzahc/(opens in new window)

Security – Defender & Threat Protection

• Declutter and defend: reducing promotional mail noise with Microsoft Defender — New Defender for Office 365 capability that reduces graymail clutter while preserving threat detection. https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/declutter-and-defend-reducing-promotional-mail-noise-with-microsoft-defender/4511732(opens in new window)
• New Defender Deployment Tool (video) — Automates onboarding of Windows, Linux, and legacy devices to Microsoft Defender, replacing scripts and manual installs. https://www.youtube.com/watch?v=RjNMdtzRU9s(opens in new window)
• Predictive Shielding – Just-in-Time Tamper Protection (video) — Defender’s predictive defence that pre-empts attacker tamper attempts before damage occurs. https://www.youtube.com/watch?v=faWuQm50suQ(opens in new window)
• Threat Hunting Agent in Advanced Hunting (video) — Security Copilot agent that lets analysts hunt threats in natural language without writing KQL. https://www.youtube.com/watch?v=OzE7oMhHBZk(opens in new window)
• Introducing the Microsoft Sentinel Training Lab — A hands-on lab environment for practising SOC operations in Sentinel. https://techcommunity.microsoft.com/blog/microsoftsentinelblog/introducing-the-microsoft-sentinel-training-lab-hands-on-security-operations-in-/4513274(opens in new window)
• Cross-tenant helpdesk impersonation – human-operated intrusion playbook — Microsoft Threat Intelligence playbook on attackers abusing helpdesk roles across tenants to exfiltrate data. https://www.microsoft.com/en-us/security/blog/2026/04/18/crosstenant-helpdesk-impersonation-data-exfiltration-human-operated-intrusion-playbook/(opens in new window)
• Detection strategies for cloud identities against infiltrating IT workers — How to detect insider-style infiltration of cloud identities (e.g., DPRK-style fake IT worker schemes). https://www.microsoft.com/en-us/security/blog/2026/04/21/detection-strategies-cloud-identities-against-infiltrating-it-workers/(opens in new window)

Data Protection & Purview

• From oversharing to enforcement – a practical guide to AI data security with Purview — End-to-end Purview workflow from discovery of oversharing through to enforcement for AI scenarios. https://techcommunity.microsoft.com/blog/microsoft-purview-blog/from-oversharing-to-enforcement-a-practical-guide-to-ai-data-security-with-micro/4513727(opens in new window)
• Safeguarding sensitive data in Microsoft 365 Copilot interactions – DLP for Copilot — DLP policies that inspect and protect sensitive data inside Copilot prompts and responses. https://techcommunity.microsoft.com/blog/microsoft-security-blog/safeguarding-sensitive-data-in-microsoft-365-copilot-interactions-dlp-for-micros/4512497(opens in new window)
• Detecting plain-text password exposure using custom regex in Microsoft Purview — Using custom Purview classifiers/regex to catch passwords exposed in documents and chat. https://techcommunity.microsoft.com/blog/microsoft-security-blog/detecting-plain%E2%80%91text-password-exposure-using-custom-regex-in-microsoft-purview/4513022(opens in new window)

Identity (Entra)

• Strengthening identity resilience – a deep dive into Microsoft Entra Backup and Restore — Detailed look at the new Entra Backup and Restore service for recovering identity configuration. https://techcommunity.microsoft.com/blog/coreinfrastructureandsecurityblog/strengthening-identity-resilience-a-deep-dive-into-microsoft-entra-backup-and-re/4513401(opens in new window)

Devices & Endpoint Management

• A practical look at device analytics and risk signals with Microsoft Intune — How nonprofits (and others) can use Intune device analytics and risk signals to drive Conditional Access. https://techcommunity.microsoft.com/blog/nonprofittechies/a-practical-look-at-device-analytics-and-risk-signals-with-microsoft-intune/4513485(opens in new window)

Collaboration & OneDrive

• Innovations in OneDrive for collaboration, intelligence, and control — Roadmap of OneDrive updates around sharing, AI features, and admin controls. https://techcommunity.microsoft.com/blog/onedriveblog/innovations-in-onedrive-for-collaboration-intelligence-and-control/4512171(opens in new window)

Industry & Regional

• Investing in Australia’s AI future — Microsoft Source piece on Microsoft’s investments in Australian AI infrastructure, skills, and partnerships. https://news.microsoft.com/source/asia/features/investing-in-australias-ai-future/

After hours

Coyote vs ACME  – https://www.youtube.com/watch?v=H-43VeYGiPM

Editorial

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Watch out for the next CIA Brief next week