Theos operates Microsoft Defender XDR and Microsoft Sentinel as one of two primary platforms for managed detection and response. Microsoft was selected for the breadth of its native integration across endpoint, identity, cloud, and email, and for the depth of independent analyst validation it carries.
Enterprise security is consolidating around integrated platforms. Microsoft offers unified visibility across endpoint, identity, cloud, and email, reducing vendor complexity and delivering coordinated detection across the full environment.
Microsoft Defender for Endpoint has been named a Leader in the Gartner Magic Quadrant for Endpoint Protection Platforms for six consecutive years, most recently in July 2025. The Forrester Wave for Security Analytics Platforms, Q2 2025, also names Microsoft as a Leader in the SIEM and XDR space.
Microsoft’s security coverage spans endpoint, identity, cloud workloads, email, and SIEM with XDR. Native integration across the full Microsoft infrastructure estate creates a unified data model for detection and response without the overhead of third-party integrations.
Many organisations already hold Microsoft 365 or Azure commitments. The security stack can often be activated within those existing enterprise agreements, reducing the number of new commercial relationships required.
Theos delivers these services to aviation operators across Singapore, Hong Kong, Malaysia, and the Philippines under the Singapore Cybersecurity Act, the Protection of Critical Infrastructure (Computer System) Ordinance (Hong Kong), Malaysia’s Cyber Security Act 2024, and the ICAO cybersecurity framework.
Theos integrates Microsoft’s security stack into our managed detection and response programme, operating it as a continuous, practitioner-led service for regulated enterprises across APAC.
Theos operates Microsoft Defender XDR and Microsoft Sentinel as a fully managed service. Our analysts monitor your environment continuously, investigate alerts with full attack context, and act on confirmed threats. Detection is tuned to your environment and improved continuously as we learn how you operate.
Microsoft Defender for Endpoint and Entra ID are deployed and managed as integrated components of your detection programme. Endpoint telemetry, identity events, and authentication activity are monitored together, giving analysts visibility across the full lateral movement path, from initial access through to domain compromise.
Defender for Cloud and Defender for Office 365 extend coverage across your Azure workloads, SaaS applications, and email environment. Theos monitors cloud configuration, access patterns, and email-based threat vectors as part of the same programme. One SOC. One report.
Microsoft Sentinel is operated as the centralised SIEM and XDR layer, aggregating telemetry across endpoint, identity, cloud, and network. Theos builds and maintains detection rules, custom analytics, and automation playbooks calibrated to your environment and to the threat actors active in your industry and market.
For organisations deploying Microsoft security tools for the first time, or inheriting a deployment that has not been optimised, Theos provides assessment, remediation, and ongoing management. The goal is a detection programme that reflects how your environment is actually built, a detection programme
calibrated to your environment from the start and tuned continuously.
Enterprises already running Microsoft 365, Azure, or Entra ID can extend their existing infrastructure into Microsoft managed security services delivered by Theos, from deployment through continuous operations.
Financial institutions, insurers, and enterprise operators governed by MAS TRM, HKMA iCAST, BNM RMiT, and BSP frameworks require managed detection and response across Microsoft Defender XDR, endpoint, identity, cloud, and email in a coordinated way. Theos delivers that coverage as a Microsoft security partner across APAC.
Organisations running multiple point products across endpoint, SIEM, and cloud security benefit from consolidating onto Microsoft Sentinel APAC and the broader Microsoft security stack. Managed by Theos, it simplifies operations and improves detection fidelity across the full environment.
Theos operates the Microsoft security platform as a continuous managed service for regulated enterprises across APAC. The platform is only as effective as the team operating it.
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