From “No” to “Now”: A 7-Layer Strategy for Enterprise AI Safety
The “block” posture on Generative AI has failed. In a global enterprise, banning these tools doesn't stop usage; it simply pushes intellectual property into unmanaged channels and creates a massive visibility gap in corporate telemetry. The priority has now shifted from stopping AI to hardening the environment so that innovation can run at velocity without compromising data sovereignty. Traditional security perimeters are ineffective against the “slow bleed” of AI leakage - where data moves through prompts, clipboards, and autonomous agents rather than bulk file transfers. To secure this environment, a 7-layer defense-in-depth model is required to treat the conversation itself as the new perimeter. 1. Identity: The Only Verifiable Perimeter Identity is the primary control plane. Access to AI services must be treated with the same rigor as administrative access to core infrastructure. The strategy centers on enforcing device-bound Conditional Access, where access is strictly contingent on device health. To solve the "Account Leak" problem, the deployment of Tenant Restrictions v2 (TRv2) is essential to prevent users from signing into personal tenants using corporate-managed devices. For enhanced coverage, Universal Tenant Restrictions (UTR) via Global Secure Access (GSA) allows for consistent enforcement at the cloud edge. While TRv2 authentication-plane is GA, data-plane protection is GA for the Microsoft 365 admin center and remains in preview for other workloads such as SharePoint and Teams. 2. Eliminating the Visibility Gap (Shadow AI) You can’t secure what you can't see. Microsoft Defender for Cloud Apps (MDCA) serves to discover and govern the enterprise AI footprint, while Purview DSPM for AI (formerly AI Hub) monitors Copilot and third-party interactions. By categorizing tools using MDCA risk scores and compliance attributes, organizations can apply automated sanctioning decisions and enforce session controls for high-risk endpoints. 3. Data Hygiene: Hardening the “Work IQ” AI acts as a mirror of internal permissions. In a "flat" environment, AI acts like a search engine for your over-shared data. Hardening the foundation requires automated sensitivity labeling in Purview Information Protection. Identifying PII and proprietary code before assigning AI licenses ensures that labels travel with the data, preventing labeled content from being exfiltrated via prompts or unauthorized sharing. 4. Session Governance: Solving the “Clipboard Leak” The most common leak in 2025 is not a file upload; it’s a simple copy-paste action or a USB transfer. Deploying Conditional Access App Control (CAAC) via MDCA session policies allows sanctioned apps to function while specifically blocking cut/copy/paste. This is complemented by Endpoint DLP, which extends governance to the physical device level, preventing sensitive data from being moved to unmanaged USB storage or printers during an AI-assisted workflow. Purview Information Protection with IRM rounds this out by enforcing encryption and usage rights on the files themselves. When a user tries to print a "Do Not Print" document, Purview triggers an alert that flows into Microsoft Sentinel. This gives the SOC visibility into actual policy violations instead of them having to hunt through generic activity logs. 5. The “Agentic” Era: Agent 365 & Sharing Controls Now that we're moving from "Chat" to "Agents", Agent 365 and Entra Agent ID provide the necessary identity and control plane for autonomous entities. A quick tip: in large-scale tenants, default settings often present a governance risk. A critical first step is navigating to the Microsoft 365 admin center (Copilot > Agents) to disable the default “Anyone in organization” sharing option. Restricting agent creation and sharing to a validated security group is essential to prevent unvetted agent sprawl and ensure that only compliant agents are discoverable. 6. The Human Layer: “Safe Harbors” over Bans Security fails when it creates more friction than the risk it seeks to mitigate. Instead of an outright ban, investment in AI skilling-teaching users context minimization (redacting specifics before interacting with a model) - is the better path. Providing a sanctioned, enterprise-grade "Safe Harbor" like M365 Copilot offers a superior tool that naturally cuts down the use of Shadow AI. 7. Continuous Ops: Monitoring & Regulatory Audit Security is not a “set and forget” project, particularly with the EU AI Act on the horizon. Correlating AI interactions and DLP alerts in Microsoft Sentinel using Purview Audit (specifically the CopilotInteraction logs) data allows for real-time responses. Automated SOAR playbooks can then trigger protective actions - such as revoking an Agent ID - if an entity attempts to access sensitive HR or financial data. Final Thoughts Securing AI at scale is an architectural shift. By layering Identity, Session Governance, and Agentic Identity, AI moves from being a fragmented risk to a governed tool that actually works for the modern workplace.
Entra Risky Users Custom Role
My customer implemented unified RBAC (Defender Portal) and removed the Entra Security Operator role. They lost the ability to manage Risky Users in Entra. Two options explored by the customer - Protected Identity Administrator role (licensing unclear) or create a custom role with microsoft.directory/identityProtection/riskyUsers/update, which they couldn't find under custom role. Do you know if there are other options to manage Risky Users without using the Security Operator role?
Windows Hello passkeys dialog appearing and cannot remove or suppress it.
Hi everyone, I’m dealing with a persistent Windows Hello and passkey issue in Chrome and Brave and yes this is relevant as they're the only browsers having this issue whilst Edge for example is fine, and at this point I’m trying to understand whether this is expected behavior, a bug, or a design oversight. PS. Yes, I'm in contact with related browser support teams but since they seem utterly hopeless i'm asking here, since its at least partially Windows Hello issue. Problem description Even with: Password managers disabled in browser settings, Windows Hello disabled in Chrome/Brave settings, Windows Hello PIN enabled only for device login, Passkeys still stored under chrome://settings/passkeys (which I cannot delete since its used for logging on the device), The devices are connected to Entra ID but this is not required to reproduce the issue although a buisness account configuration creates a Passkey with Windows Hello afaik. Observed behavior When I attempt to sign in on office.com, Windows Hello automatically triggers a dialog offering authentication via passkeys, even though: I don’t want passkeys used for browser logins, passkeys are turned off everywhere they can be, Windows Hello is intended only for local device authentication. The dialog cannot be suppressed, disabled, or hidden(trust me, i tried for weeks). It effectively forces the Windows Hello prompt as a primary option, which causes problems both personally and in business contexts (wrong credential signaling, misleading users that are supposed to use a dedicated password manager solution insted of browser password managers, enforcing an unwanted authentication flow, etc.). What I already verified Many, many, (too many) Windows registry workarounds that never worked. Dug through almost all flags on those browsers. Chrome/Brave → Password Manager: disabled Chrome/Brave → Windows Hello toggle: off Looked through what feels like almost every related option in Windows Settings. Tried gpedit.msc local rules System up to date Windows Hello configured to use PIN, but stores "passkeys used to log on to this device" Why this is a problem Windows Hello automatically assumes that the device-level Windows Hello credentials should always be available as a WebAuthn authenticator. This feels like a big security and UX issue due to: unexpected authentication dialogs, Inability to controll where and how passkey credential are shared to applications, inability to turn the feature off, no administrative or local option to disable Hello for WebAuthn separately from device login. Buisness users either having issues with keeping passwords in order (our buissnes uses a dedicated Password Manager but this behaviour covers its dialog option) or not having PIN to their devices (when I disable windows hello entierly, since when there is no passkeys the option doesn't appear) Questions Is there any supported way to disable Windows Hello as a WebAuthn/passkey option in browsers, while keeping Hello enabled for local device login? Is this expected behavior from the Windows Hello, or is it considered a bug? Are there registry/policy settings (documented or upcoming) that allow disabling the Windows platform authenticator specifically for browsers like Chrome and Brave? Is Microsoft aware of this issue? If so, is it tracked anywhere? Additional notes This issue replicates 100% across (as long as there are passkeys configured): Windows 11 devices i've managed to get my hands on, Chrome and Brave (latest versions), multiple Microsoft accounts and tenants, multiple clean installations. Any guidance or clarification from the Windows security or identity teams would be greatly appreciated. And honestly if there is any more info i could possibly provide PLEASE ask away.Request to enable preview feature - Face Check with CAP
Dear Microsoft, I am on a business premium plan for my home test tenant. I cannot raise ticket nor do I have an account manager. I know this is in private preview. I would like my tenant to be enabled to test this new Verified ID feature to have "Face Check" in CAP as one of the Grant conditions. tenant id: bc85b508-0107-4472-a49c-fc8cefd4f0d7 Thank you.
Add Privacy Scrub Service to Microsoft Defender?
Microsoft Defender protects accounts against phishing and malware, but attackers increasingly exploit nuisance data broker sites that publish personal information (names, emails, addresses). These sites are scraped to personalize phishing campaigns, making them harder to detect. I propose a premium Defender add‑on that automatically files opt‑out requests with major data brokers (similar to DeleteMe).Entra Verified ID: CAP Preview Feature to require Face Check
During one of the MS demo video, I saw a preview feature for Conditional Access Policy to require "Face Check". I have now enabled Entra Verified ID and also switched on Face Check. When I create a new CAP, I do not see the "Require Face Check" option under the Grant. How can I request to have this feature released to my tenant? Thanks!
