Bezpečnostný radar

Microsoft Purview Data Loss Prevention is extending Administrative Units support to Microsoft 365 Copilot, Copilot Chat, and Cowork. This enables organizations to delegate management of supported Copilot DLP policies to administrators within their assigned Administrative Units, supporting regional, departmental, and r…

Enables auto‑labeling of existing SharePoint files to match the default sensitivity label configured on their document library. This helps organizations close labeling gaps for data at rest and ensure consistent, secure‑by‑default protection across SharePoint libraries—without relying on manual user labeling. GA date:…

With this feature, admins can scope their network data security data loss prevention policies, integrated with Entra GSA Internet Access, to apply to all websites (.) or all websites except specific cloud apps, allowing them to apply protection to cloud apps and websites that are not in the Defender Cloud App Catalog.…

Prepare for post-quantum authentication by testing certificate ecosystems now. Learn how Microsoft’s PQC TLS Pilot Program helps advance future readiness. The post Post-quantum authentication: Why organizations should start testing certificate ecosystems now appeared first on Microsoft Security Blog.

Access to Archive mailboxes (Main + Auxiliary) through Microsoft Graph. The goal is to give users a single, seamless Archive view, even though Archive data may physically reside across multiple auxiliary mailboxes with EWS Graph APIs being deprecated. GA date: December CY2026

Improving permission checks when users access the Microsoft Purview portal. Enhanced audit logs will provide clearer visibility into role and scoped-role access decisions, helping administrators troubleshoot access issues and monitor authorization outcomes. GA date: October CY2026

Microsoft Purview Unified Classification Management Experience Feature overview and administrator playbook Overview The new Classifiers experience brings supported Microsoft Purview classification types into one place where administrators can discover, create, inspect, and manage classifiers. It adds practical visibil…

The Microsoft Purview architecture diagrams provide a referential view of how data classification, sensitivity labeling, Data Loss Prevention (DLP) and Insider Risk operate across Microsoft 365 workloads. These diagrams are intended to help organisations understand where policy evaluation occurs, how signals flow betw…

This month's updates help you discover and control local AI agents, extend Zero Trust to agent traffic, and strengthen SOC foundations. The post What’s new in Microsoft Security: September 2026 appeared first on Microsoft Security Blog.

AI is transforming the attacker’s operating model, accelerating threats to unprecedented speed and scale. Yet many security operations centers still depend on fragmented data, tools, intelligence, and workflows. Analysts spend valuable time rebuilding context and coordinating action across systems, while the economics…

Security work extends beyond the signal Identifying a threat, exposure, or data risk is only the start. Security teams still need to assign ownership, bring together the right context, coordinate investigation and response, document decisions, track actions, and maintain accountability through resolution. That work is…

Some existing retention policies scoped to Microsoft Teams may currently also apply to Microsoft 365 Copilot interactions. As part of an upcoming change, these legacy Teams retention policies will be converted to—and treated as—Teams-only policies. They will no longer implicitly govern Copilot workloads. GA date: Janu…

The Unified Classification Management Experience unifies every classifier in Microsoft Purview—Sensitive Information Types (SITs), Exact Data Match (EDM), fingerprint SITs, and trainable classifiers—into one place to discover, create, validate, and manage classifiers. GA date: March CY2027 Preview date: October CY2026

Microsoft Purview Data Loss Prevention (DLP) is expanding to Microsoft Cowork, enabling data security admins to use a single policy across Microsoft 365 Copilot and Cowork. The integration helps protect sensitive AI interactions by preventing the use of labeled knowledge sources, blocking prompts that contain supporte…

Microsoft Purview is improving auto-labeling capabilities to help organizations manage and validate labeling policies at enterprise scale. These enhancements expand support for larger SharePoint scopes, improve policy management flexibility, and provide richer visibility into auto-labeling activity. GA date: November…

Many major breaches involve compromised identities, excessive privileges, or misconfigured access. Long before ransomware detonates or data leaves the building, adversaries are quietly abusing valid accounts, excessive privileges or other misconfigurations to move deeper into the environment. Identity has become one o…

Three layers that work like a good team and slides to show it Data Loss Prevention (DLP) is not new, many use it daily without ever even knowing it, but with AI bringing faster results for productivity so does the risk of data leakage. That is where we take a layered approach, meeting the end user exactly where they a…

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 Security: August 2026 appeared first on Microsoft Security Blog.

Outlook for iOS and Android will support Microsoft Purview Data Loss Prevention (DLP) wait-on-send policies. Organizations can require a DLP evaluation before an email is sent and configure how long users must wait for policy evaluation to complete. This helps ensure sensitive information is inspected against organiza…

Outlook for Mac will support Microsoft Purview Data Loss Prevention (DLP) wait-on-send policies. Organizations can require a DLP evaluation before an email is sent and configure how long users must wait for policy evaluation to complete. This helps ensure sensitive information is inspected against organizational polic…

Configure retention for Microsoft 365 Copilot memory to help preserve historical versions of memory items for security, compliance, and investigation scenarios. Copilot memory includes saved memories and details inferred from chat history that enable more personalized and context-aware Copilot experiences. Copilot mem…

Outlook for Mac will support Microsoft Purview Data Loss Prevention (DLP) policies for calendar events. Organizations can detect and help prevent the sharing of sensitive information in meeting subjects, descriptions, and invite content through policy tips, user remediation, and policy enforcement. This provides consi…

For each enforced auto-labeling policy, admins can view how files processed during enforcement correlate to the latest simulation run. The per-policy coverage report shows volumes of files that have been labeled or are not yet labeled, and whether those files were included in the last simulation snapshot. This helps a…

Outlook for iOS and Android will support Microsoft Purview sensitivity label inheritance from attachments. When users attach files with sensitivity labels, Outlook can automatically apply or recommend an email sensitivity label based on organizational policy settings. This helps organizations maintain consistent data…

When composing an email in Outlook for Mac, Microsoft Purview sensitivity labels can be automatically applied or recommended based on the sensitivity labels of attached files. This helps users consistently protect sensitive information, reduces manual labeling effort, and supports organizational compliance requirement…