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Custodia Cyber

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Microsoft 365 security hardening for SMEs

Custodia Cyber helps small and mid-sized organisations secure Microsoft 365 and reduce real-world breach risk. We specialise in fast security health checks, practical remediation, and ongoing support that improves identity security, email protection, and collaboration controls across Exchange, Entra ID, Teams, SharePoint, and OneDrive. Clients choose us when they need clear priorities, quick wins, and measurable improvements, not generic reports. Services include fixed-scope security assessments, hardening sprints, and managed support packages delivered remotely, with optional on-site support in London.

  • Min project size
    $1,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    2 - 9
  • Locations
    London, England
  • Year founded
    Founded 2024

1 Locations

  • London , England

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    Our Story

    Custodia Cyber is a security-first IT consultancy focused on Microsoft 365 hardening, security assessments, and managed support for small and mid-sized organisations. We prioritise practical controls that reduce real-world risk, clear reporting, and fast delivery. Remote-first across the UK and internationally, with on-site support available in Greater London.

    What Sets Us Apart

    Microsoft 365 security hardening

    We specialise in securing Microsoft 365 environments. We reduce account takeover and phishing risk through MFA and admin hygiene, Conditional Access baselines, secure email controls, and sensible sharing governance across Teams, SharePoint and OneDrive.

    Clear deliverables, no fluff

    You get practical outcomes, not generic reports: a concise risk summary, quick wins implemented where approved, and a prioritised remediation plan you can execute. We document changes clearly so stakeholders can review and evidence improvements.

    Tools and Technology

    Azure
    Microsoft Teams
    SharePoint
    OneDrive
    GitHub
    Docker

    Commonly Asked Questions

    We measure success by risk reduction and operational outcomes: improved Microsoft Secure Score, MFA and Conditional Access coverage, removal of risky mailbox rules and legacy authentication, tightened external sharing, and a tracked remediation plan with clear priorities. Clients also see fewer phishing incidents and faster resolution times through structured support.

    We work remotely via Teams and shared documentation, with weekly progress updates and clear action lists. Access is granted using least privilege and audited accounts. We use a ticketed workflow for remediation and change approval so stakeholders stay in control and there are no surprises.

    We start with scoping and a short discovery call, then complete secure access setup, review the tenant baseline, and agree a delivery plan. For assessments, we deliver findings and quick wins first, followed by a prioritised remediation roadmap. For ongoing support, we implement monitoring, ticketing, and a monthly security review cadence.

    Locations (1)

    32 Birchdene Drive London, England SE28 8RL

    2 - 5

    Contact Custodia Cyber

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