Arcihtekt M365 // Ogłoszenie pracy
Kim jesteśmy? Technologia to nasza pasja, ale nie tylko! Wspieramy inicjatywy społeczne, ekologiczne i promujące aktywny styl życia. Jesteśmy laureatem prestiżowych nagród posiadamy certyfikat Great Place to Work, a na co dzień współpracujemy z globalnymi liderami IT - VMware, Fortinet, IBM, HPE, Dell, Hitachi, Microsoft, AWS. Nasz zespół tworzą utalentowani inżynierowie i doświadczeni architekci IT. Dołącz do nas i zostań częścią #ITSFteam! Kogo szukamy? Arhitekta M365, który dołączy do naszego zespołu i będzie odpowiedzialny za projektowanie, wdrażanie oraz zarządzanie rozwiązaniami opartymi na Microsoft 365. Idealny kandydat to osoba z doświadczeniem w architekturze chmurowych rozwiązań Microsoft, posiadająca umiejętność kompleksowego projektowania i optymalizacji procesów w obrębie aplikacji i usług M365, takich jak Teams, Sharepoint, Exchange Online, OneDrive, Power Platform czy Microsoft 365 Copilot. Warto od razu zaznaczyć, będzie to praca w modelu hybrydowym 4/1 w Warszawie. Co oferujemy? Współpaca bezpośrednio z nami na okres długofalowy (5+ lat); Możliwość rozwoju przy pracach dla największych klientów Enterprise w całym kraju; Pakiet medyczny Medicover; Karta Multisport; Program PPK; Lekcje angielskiego; Dodatkowy dzień urlopu z okazji urodzin; Około 8 integracji frmowych w roku :) Jeśli propozycja brzmi interesująco i chciałbyś poznać więcej szczegółów na temat wymagań, bądź zakresu obowiązków — to śmiało aplikuj przez link niżej: https://itsf.traffit.com/public/an/0ed08bcedcd522af2936290b48d33a9e48697565
Compliance search is not returning any data (Powershell)
At our organization, we have an SOP for purging phishing emails from all mailboxes. Part of that is creating a search and then examining it for any legit emails before going on to the purge step. The commands below are no longer returning any data, and they used to work. What has changed? PS C:\Windows\system32> Connect-IPPSSession -UserPrincipalName email address removed for privacy reasons PS C:\Windows\system32> New-ComplianceSearch -Name "Broken" -ExchangeLocation All -ContentMatchQuery 'Subject:"invoice"' Name RunBy JobEndTime Status ---- ----- ---------- ------ Broken NotStarted PS C:\Windows\system32> Start-compliancesearch -identity "broken" PS C:\Windows\system32> Get-compliancesearch -identity "broken" Name RunBy JobEndTime Status ---- ----- ---------- ------ Broken admin 7/14/2025 8:17:09 PM Completed PS C:\Windows\system32> Get-ComplianceSearch -Identity "broken" | >> Select-Object Name, Status, ItemsFound, Size, CreatedBy, CreatedTime | >> Export-Csv -Path "C:\filename.csv" -NoTypeInformation The resultant .csv has only the headers, but no information about emails, so any purge commands have nothing to purge. Thank youSecuring the Modern Workplace: Transitioning from Legacy Authentication to Conditional Access
Authored by: Gonzalo Brown Ruiz, Senior Microsoft 365 Engineer & Cloud Security Specialist Date: July 2025 Introduction In today’s threat landscape, legacy authentication is one of the weakest links in enterprise security. Protocols like POP, IMAP, SMTP Basic, and MAPI are inherently vulnerable — they don’t support modern authentication methods like MFA and are frequently targeted in credential stuffing and password spray attacks. Despite the known risks, many organizations still allow legacy authentication to persist for “just one app” or “just a few users.” This article outlines a real-world, enterprise-tested strategy for eliminating legacy authentication and implementing a Zero Trust-aligned Conditional Access model using Microsoft Entra ID. Why Legacy Authentication Must Die No support for MFA: Enables attackers to bypass the most critical security control Password spray heaven: Common vector for brute-force and scripted login attempts Audit blind spots: Limited logging and correlation in modern SIEM tools Blocks Zero Trust progress: Hinders enforcement of identity- and device-based policies Removing legacy auth isn’t a nice-to-have — it’s a prerequisite for a modern security strategy. Phase 1: Auditing Your Environment A successful transition starts with visibility. Before blocking anything, I led an environment-wide audit to identify: All sign-ins using legacy protocols (POP, IMAP, SMTP AUTH, MAPI) App IDs and service principals requesting basic auth Users with outdated clients (Office 2010/2013) Devices and applications integrated via PowerShell, Azure Sign-In Logs, and Workbooks Tools used: Microsoft 365 Sign-In Logs Conditional Access insights workbook PowerShell (Get-SignInLogs, Get-CASMailbox, etc.) Phase 2: Policy Design and Strategy The goal is not just to block — it’s to transform authentication securely and gradually. My Conditional Access strategy included: Blocking legacy authentication protocols while allowing scoped exceptions Report-only mode to assess potential impact Role-based access rules (admins, execs, vendors, apps) Geo-aware policies and MFA enforcement Service account handling and migration to Graph or Modern Auth-compatible apps Key considerations: Apps that support legacy auth only Delegates and shared mailbox access scenarios BYOD and conditional registration enforcement Phase 3: Staged Rollout and Enforcement A phased approach reduced friction: Pilot group enforcement (IT, InfoSec, willing users) Report-only monitoring across business units Clear communications to stakeholders and impacted users User education campaigns on legacy app retirement Gradual enforcement by department, geography, or risk tier We used Microsoft Entra’s built-in messaging and Service Health alerts to notify users of policy triggers. Phase 4: Monitoring, Tuning, and Incident Readiness Once policies were in place: Monitored Sign-in logs for policy match rates and unexpected denials Used Microsoft Defender for Identity to correlate legacy sign-in attempts Created alerts and response playbooks for blocked sign-in anomalies Results: 100% of all user and app traffic transitioned to Modern Auth Drastic reduction in brute force traffic from foreign IPs Fewer support tickets around password lockouts and MFA prompts Lessons Learned Report-only mode is your best friend. Avoids surprise outages. Communication beats configuration. Even a perfect policy fails if users are caught off guard. Legacy mail clients still exist in vendor tools and old mobile apps. Service accounts can break silently. Replace or modernize them early. CA exclusions are dangerous. Every exception must be time-bound and documented. Conclusion Eliminating legacy authentication is not just a policy update — it’s a cultural shift toward Zero Trust. By combining deep visibility, staged enforcement, and a user-centric approach, organizations can securely modernize their identity perimeter. Microsoft Entra Conditional Access is more than a policy engine — it is the architectural pillar of enterprise-grade identity security. Author’s Note: This article is based on my real-world experience designing and enforcing Conditional Access strategies across global hybrid environments with Microsoft 365 and Azure AD/Entra ID. Copyright © 2025 Gonzalo Brown Ruiz. All rights reserved.Building Enterprise-Grade DLP with Microsoft Purview in Hybrid & Multi-Cloud Environments
Authored by: Gonzalo Brown Ruiz, Senior Microsoft 365 Engineer & Cloud Security Specialist Date: July 2025 Introduction Data is the lifeblood of every modern organization, yet it remains one of the most exposed assets. As organizations embrace hybrid and multi-cloud models, traditional endpoint or email-only DLP solutions no longer provide sufficient protection. The explosion of data across Exchange, SharePoint, Teams, OneDrive, and third-party SaaS applications introduces new risks and compliance challenges. Microsoft Purview Data Loss Prevention (DLP) provides a powerful solution that unifies data governance, sensitivity labeling, and policy enforcement across your cloud ecosystem. However, building an enterprise-grade DLP strategy goes far beyond enabling policies. Why Traditional DLP Fails in Modern Environments Traditional DLP approaches often: Protect only endpoints or email without covering cloud services Lack integration with data classification and labeling frameworks Generate excessive false positives due to generic rule sets Create operational friction for end users In hybrid environments with Teams, SharePoint, and OneDrive, these limitations lead to fragmented coverage, compliance blind spots, and user workarounds that expose sensitive data. The Microsoft Purview Advantage Microsoft Purview DLP offers: Unified policy management across Exchange Online, SharePoint, Teams, and OneDrive Integration with Sensitivity Labels for data classification and encryption Real-time policy tips that educate users without blocking productivity Built-in compliance manager integration for audit readiness When architected properly, Purview becomes a strategic enabler of data governance and compliance rather than just a security checkbox. Key Components of an Enterprise-Grade DLP Strategy 1. Data Classification and Labeling Implement Sensitivity Labels with auto-labeling policies to classify and protect sensitive data at scale. 2. Policy Scoping and Exceptions Handling Design DLP policies that balance security with operational needs, incorporating exceptions for justified business processes. 3. Insider Risk Management Integration Correlate DLP events with insider risk signals to identify intentional or accidental data misuse. 4. Audit, Reporting, and Compliance Evidence Configure alerting, detailed reporting, and data residency mapping to fulfill regulatory and internal audit requirements. Implementation Framework: Your Step-by-Step Guide 1. Preparation Conduct a data inventory and sensitivity assessment Identify regulatory and contractual compliance obligations Engage business stakeholders for adoption readiness 2. Pilot Deployment Roll out policies to a controlled user group Review policy matches and refine rules to minimize false positives Provide targeted user training on policy tips and data handling expectations 3. Full Deployment Scale DLP policies across workloads (Exchange, SharePoint, Teams, OneDrive) Implement automated remediation actions with user notifications and audit logs 4. Optimization and Continuous Improvement Review policy match reports regularly to fine-tune thresholds and rules Incorporate feedback from security, compliance, and end users Integrate with eDiscovery workflows for legal readiness Best Practices and Lessons Learned Start with monitor-only policies to baseline activity before enforcing blocks Combine DLP with Sensitivity Labels and encryption policies for holistic protection Regularly educate users on data classification and handling standards Create clear governance structures for DLP ownership and policy management Balance security controls with user productivity to avoid shadow IT workarounds Conclusion Data Loss Prevention is no longer optional – it is a critical enabler of trust, compliance, and operational excellence. By architecting Microsoft Purview DLP as part of an enterprise data governance strategy, organizations can protect their most valuable asset – data – while empowering users to work securely and efficiently. Author’s Note: This article is based on my extensive professional experience designing and implementing Microsoft Purview DLP solutions for global enterprises across hybrid and multi-cloud environments. Copyright © 2025 Gonzalo Brown Ruiz. All rights reserved.Implementing Privileged Identity Management (PIM): Enhancing Security Through Just-in-Time Access
Authored by: Gonzalo Brown Ruiz, Senior Microsoft 365 Engineer & Cloud Security Specialist Date: July 2025 Introduction In today’s rapidly evolving cybersecurity landscape, privileged accounts remain among the highest-value targets for attackers. Administrative privileges grant broad access to systems, configurations, and sensitive data. Mismanagement or compromise can result in catastrophic breaches, compliance violations, and operational disruptions. Microsoft Entra Privileged Identity Management (PIM) is a critical security and governance tool for any organization leveraging Entra ID (formerly Azure Active Directory). It provides just-in-time (JIT) privilege elevation, drastically reducing risk exposure while maintaining operational efficiency. Why Should Organizations Implement PIM? Traditional privilege models assign permanent, standing permissions to administrators. While convenient, this creates continuous risks: Expanded attack surface: Standing admin rights are prime targets for credential theft. Limited visibility and control: Lack of activation records hinders auditing and investigations. Non-compliance: Security standards require least privilege and JIT access. Implementing PIM enforces JIT activation, ensuring privileges are: Granted only when necessary Time-bound with automatic expiration Auditable and justifiable Protected by multi-factor authentication (MFA) and approval workflows Key Benefits of Entra PIM Enhanced Security Posture: Eliminates standing elevated privileges, minimizing lateral movement risks. Regulatory Compliance: Meets ISO 27001, PCI-DSS, NIST, and other strict privileged access requirements. Operational Accountability: Records who activated which role, when, why, and for how long. Reduced Insider Threat Risk: Ensures privileged access is intentional, reviewed, and limited. Improved Governance and Audit Readiness: Provides clear trails for internal audits, external assessments, and breach investigations. How to Use PIM Properly: Standard Activation Process 1. Access Entra PIM Log into https://entra.microsoft.com Navigate to Privileged Identity Management in the left menu. 2. View Eligible Roles Click My roles. Review roles under Azure AD roles marked as eligible. 3. Activate the Required Role Click Activate next to the needed role. Provide a business justification. Select the activation duration (up to allowed maximum). Complete MFA authentication if prompted. If approvals are required, wait for completion. 4. Confirm Activation The role will appear under Active assignments. Perform privileged tasks as needed. 5. Allow Activation to Expire Elevated access automatically expires after the activation period. Reactivate the role for future privileged tasks. Best Practice Recommendations Activate roles only when required Use minimal durations to limit exposure Provide clear, specific business justifications Monitor activation logs regularly for anomalies Educate administrators on PIM as part of security onboarding and ongoing awareness programs Conclusion Privileged Identity Management is not just a feature – it is a security imperative. Implementing PIM strengthens defenses against internal and external threats, fulfills compliance requirements, and fosters operational discipline and accountability. Empowering administrators to understand and properly use PIM ensures privileged access transforms from a high-risk liability to a controlled, auditable asset aligned with modern cybersecurity best practices. Copyright © 2025 Gonzalo Brown Ruiz. All rights reserved.Architecting Microsoft 365 Environments for Multi-National Enterprises: Lessons from the Field
Introduction In today’s global economy, enterprises rely on Microsoft 365 to empower seamless collaboration across borders. However, deploying and securing multi-national M365 environments introduces complex technical, operational, and compliance challenges. With over two decades architecting cloud environments across the Americas, EMEA and APAC, I’ve led numerous deployments and migrations requiring hybrid identity resilience, data sovereignty compliance, and global operational continuity. This article presents field-tested lessons and strategic best practices to guide architects and IT leaders in designing robust, compliant, and scalable Microsoft 365 environments for multi-national operations. Key Challenges in Multi-National M365 Deployments 1. Hybrid Identity Complexity Managing synchronization between on-premises Active Directory and Azure AD becomes exponentially complex across regions. https://learn.microsoft.com/en-us/azure/active-directory/hybrid/whatis-hybrid-identity can introduce replication delays and login failures if not properly planned. Tip: Always assess latency impact on Kerberos authentication, token issuance, and Azure AD Connect synchronization cycles. 2. Data Residency and Compliance Many countries enforce strict data sovereignty laws restricting where personal and sensitive data can reside. Selecting tenant regions and enabling https://learn.microsoft.com/en-us/microsoft-365/enterprise/microsoft-365-multi-geo?view=o365-worldwide become critical to avoid compliance violations. Impact Example: A financial institution with European operations faced potential GDPR breaches until Multi-Geo was implemented to ensure Exchange Online and OneDrive data remained within EU boundaries. 3. Licensing and Cost Control Balancing E3, E5, and F3 licenses across countries with varying user roles and local currencies adds administrative and financial complexity. Best Practice: Implement https://learn.microsoft.com/en-us/azure/active-directory/enterprise-users/licensing-groups-assign, aligning assignments with security groups mapped to user personas. 4. Secure Collaboration Across Borders External sharing in SharePoint, OneDrive, and Teams federation introduces security risks if not precisely configured. Default sharing settings often exceed local compliance requirements, risking data leakage. Lesson Learned: Always validate external sharing policies against each country’s data protection laws and client contractual agreements. 5. Operational Support and SLA Alignment Global operations require support models beyond single-region business hours, demanding proactive incident response and escalation planning. Example: Implementing follow-the-sun support with regional admins trained on Microsoft 365 admin centers and PowerShell mitigates downtime risks. Strategic Solutions and Best Practices 1. Architect Hybrid Identity with Redundancy Deploy https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-sync-staging-server in alternate datacenters. Implement Password Hash Sync to reduce dependency on VPN and WAN availability for authentication. 2. Utilize Microsoft 365 Multi-Geo Capabilities Leverage https://learn.microsoft.com/en-us/microsoft-365/enterprise/microsoft-365-multi-geo?view=o365-worldwide to meet data residency requirements per geography. Validate licensing implications and admin configurations for each satellite location. 3. Segment Licensing by User Persona Define clear user personas (executives, knowledge workers, frontline staff). Map license types accordingly, optimizing costs while ensuring productivity needs are met. Use https://learn.microsoft.com/en-us/azure/active-directory/enterprise-users/licensing-groups-assign for scalable management. 4. Design Conditional Access Policies by Geography Create https://learn.microsoft.com/en-us/azure/active-directory/conditional-access/location-condition. Integrate with Intune compliance policies to block or limit access for non-compliant devices. 5. Implement a Global Governance Model Establish clear local vs. global admin roles to maintain accountability. Enforce https://learn.microsoft.com/en-us/azure/active-directory/privileged-identity-management/pim-configure to control and audit privileged access. Lessons Learned from the Field Latency is a silent killer – Always test Microsoft Teams and OneDrive performance across regions before production rollouts. Communication is critical – Local IT teams must align early with global security and compliance strategies. Compliance first – Never assume Microsoft’s default data location suffices for local regulations. Cost optimization is ongoing – Conduct license audits and adjust assignments every six months. Conclusion Architecting Microsoft 365 for a multi-national enterprise demands strategic integration of compliance, hybrid identity resilience, secure collaboration, and cost optimization. Cloud success in a global enterprise is not an accident – it is architected. By applying these best practices validated against Microsoft recommendations and real-world deployments, organizations can empower global collaboration without sacrificing governance or security. About the Author Gonzalo Brown Ruiz is a Senior Office 365 Engineer with over 21 years architecting secure, compliant cloud environments across North America, Latin America, EMEA and APAC. He specializes in Microsoft Purview, Entra ID, Exchange Online, eDiscovery, and enterprise cloud security.The Art of Corporate Domain Rebranding in Microsoft 365: Technical and Compliance Challenges
Introduction Corporate domain rebranding is often perceived as a simple marketing change — a new name, refreshed logo, and website updates. However, within Microsoft 365 environments, rebranding becomes a complex technical operation impacting identity systems, authentication, collaboration tools, compliance archives, and user experiences. Having led multiple major domain rebranding initiatives, I’ve uncovered strategic and technical challenges organizations must anticipate, along with best practices to ensure seamless transformation. Key Technical Challenges in Domain Rebranding 1. Email Identity and Legacy SMTP Preservation Every user, shared mailbox, and distribution list must be readdressed, preserving historical SMTP aliases for continuity and legal compliance. Reference: https://learn.microsoft.com/en-us/exchange/email-addresses-and-address-books/email-address-policies/email-address-policies 2. OneDrive for Business and SharePoint Online URL Dependencies Rebranding requires careful planning for OneDrive and SharePoint URLs, tied to the tenant’s primary domain. Microsoft now supports renaming SharePoint domains — a feature I implemented to transition from legacy SharePoint domains to new branded domains using PowerShell and Microsoft’s supported process. Reference: https://learn.microsoft.com/en-us/sharepoint/change-your-sharepoint-domain-name 3. Authentication and Directory Synchronization Impacts When using Microsoft Entra Connect (Azure AD Connect), all User Principal Names (UPNs) must be adjusted to reflect the new domain, ensuring no disruptions to hybrid synchronization or Conditional Access policies. Reference: https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-sync-staging-server 4. Microsoft Teams and External Federation Teams relies on domain-based routing. Updating the primary domain affects federation trust and meeting invitations, requiring proactive partner communication. 5. Compliance and eDiscovery Integrity Archived content in Exchange Online, SharePoint, and Teams must maintain legal hold continuity and eDiscovery searchability, even after email addresses change. Reference: https://learn.microsoft.com/en-us/microsoft-365/compliance/ediscovery 6. Office 365 Apps: Identity, Activation, and Licensing Breaks Apps like Outlook, Teams, Word, Excel, and OneDrive cache user credentials and domain suffixes. Rebranding can cause: Activation failures Sign-in errors in Outlook or Teams Cached credential conflicts Strategic Solutions and Best Practices 1. Dual SMTP Strategy Add the new domain as the primary SMTP, retaining previous addresses as secondary aliases to maintain continuity, customer service, and compliance. 2. OneDrive and SharePoint Communication Plan Prepare user communication plans, support documentation, and staged URL testing before renaming SharePoint Online domains. 3. UPN and Sign-In Alignment Sequence UPN updates carefully in hybrid environments, testing Conditional Access, SSO, and MFA in staging before deployment. 4. Teams External Federation Refresh Inform external partners of domain changes, validate federation re-establishment, and update meeting templates. 5. Maintain eDiscovery Chain of Custody Document every mailbox address change. Confirm Microsoft Purview holds and content searches remain intact for both old and new identities. 6. Office 365 Apps Rebinding Strategy Communicate expectations clearly Instruct users to sign out before cutover Push credential cache clearing via script or Intune Re-authenticate apps post-UPN change Lessons Learned Rebranding is an identity transformation, not just cosmetic. Office apps can silently break; proactive reconfiguration avoids support spikes. Testing is non-negotiable. Communication reduces user friction and IT escalations. SharePoint domain renaming works with precision when following Microsoft’s official process. Conclusion Corporate domain rebranding in Microsoft 365 is a delicate balance of technical precision, compliance management, user experience preservation, and Office app continuity. Done correctly, it strengthens organizational agility and brand alignment without sacrificing trust. Cloud identity is brand identity — and managing it well is an art. About the Author Gonzalo Brown Ruiz is a Senior Microsoft 365 Engineer and Cloud Security Specialist with over 21 years of experience delivering secure, compliant, and resilient cloud environments across North America and Latin America. Specialized in Microsoft Teams, Exchange Online, OneDrive for Business, SharePoint Online, Microsoft Purview, and Entra ID.
Hidden Group and Hidden Group Membership
Hi everyone! I have come across a requirement where the client would like to use an excel spreadsheet, a service account and application registration to manage group membership for a confidential group. They would like to create a group from which the members cannot leave, see other team members and cannot see the group itself. Now, I have the concept of the flow with me but for the life of me, I cannot get around to finding/configuring a group that meets the requirement. Have you guys come across this sort of scenario? Group Configuration: Users should not be able to view the group Users should not be able to view members of the group Users should not be able to leave the group Thanks in advance.Integration of 0 365 with arcsight
During integration of microsoft O 365 with arcsight connector I am getting below error Connector parameters did not pass the venfication with error [1: Cannot start subscription for Office 365 content type = [Audit SharePoint) 2: Cannot start subscription for Office 365 content type = Audit.Exchange) 3: Cannot start subscription for Office 365 content type = [Audit.AzureActiveDirectory] Cannot start subscription for Office 365 content type - [Audit.General] 5: Cannot list subscriptions for Office 365 1 for connector [Microsoft 0 365). Do you still want to comsnue?Time to Review How to Preserve Ex-Employee Data
This week’s Microsoft layoffs provide a timely reminder to review how to retain and secure ex-employee data. OneDrive for Business might be the biggest challenge because of the variety of application data that now ends up in user OneDrive accounts. Agents and Flows are also an area of concern, as are objects like apps, phone numbers, and recurring meetings. https://office365itpros.com/2025/05/16/preserve-ex-employee-data/
