Banking Cybersecurity Solution with Microsoft Entra ID & Defender

Identity Governance, Threat Protection, and Secure Mobile Access for Local Community Bank

The Challenge: Strengthening Banking Cybersecurity and Identity Governance

This local community bank identified several identity governance, access control, and Microsoft 365 security gaps that were creating operational risk and limiting alignment with FFIEC guidance and NIST Cybersecurity Framework (CSF) 2.0 expectations.

The bank’s hybrid identity environment relied on legacy synchronization tooling, fragmented administrative controls, and inconsistent enforcement of least-privilege access principles. Existing identity synchronization through Azure AD Connect introduced operational complexity and limited resiliency, while privileged accounts lacked centralized just-in-time access controls, comprehensive auditing, and approval-based elevation workflows.

In addition, the bank was underutilizing native Microsoft 365 E5 security capabilities, leaving gaps in preventative and detective controls across identity, email, and cloud services. Threat telemetry was fragmented across multiple platforms— including Ivanti, Microsoft 365, Symantec, Secureworks Taegis, and other tools— reducing visibility into identity compromise, lateral movement, credential misuse, and internal Microsoft 365 threats.

The bank also faced growing challenges surrounding secure mobile access and BYOD usage. Employees accessed Microsoft 365 resources from personal mobile and non-Windows devices without application-level data protection, app-based Conditional Access policies, or enforceable controls to prevent unauthorized data movement.

At the same time, the bank wanted to preserve its existing investments in Ivanti for Windows endpoint management and Proofpoint for external email security while modernizing its Microsoft identity and cloud security architecture.

To address these challenges, the local community bank partnered with Data Networks to execute a comprehensive banking cybersecurity modernization initiative focused on identity governance, Microsoft Defender integration, mobile application protection, and Microsoft 365 security enhancement.

The Solution: Banking Cybersecurity Modernization with Microsoft Security Technologies

Data Networks designed and implemented a layered banking cybersecurity solution that strengthened identity governance, improved Microsoft 365 threat protection, enhanced visibility into suspicious activity, and secured mobile access to corporate data.

The engagement began with detailed discovery and planning sessions to validate identity synchronization requirements, administrative access models, Microsoft 365 readiness, mobile application management prerequisites, and existing security integrations. Data Networks coordinated directly with bank stakeholders to establish implementation milestones, governance objectives, and operational success criteria.

To modernize hybrid identity synchronization, Data Networks deployed redundant Microsoft Entra Cloud Sync agents and transitioned the environment away from legacy Azure AD Connect infrastructure. Synchronization scopes and attribute mappings were validated to ensure accurate and resilient identity updates across the environment.

The project also included deployment and configuration of Self-Service Password Reset (SSPR) with password write-back capabilities, enabling secure password recovery workflows while reducing administrative overhead.

To strengthen privileged access governance, Data Networks implemented Microsoft Privileged Identity Management (PIM), converting designated administrative roles to just-in-time eligible access with approval workflows, MFA requirements, audit logging, and access review cycles aligned with FFIEC and NIST recommendations.

To improve threat detection and visibility across identity infrastructure, Data Networks deployed Microsoft Defender for Identity sensors across up to nine domain controllers. Defender telemetry was integrated into Microsoft 365 Defender and surfaced into Secureworks Taegis to support centralized monitoring, correlation, and incident response capabilities.

The engagement also enabled Microsoft Defender for Office 365 Plan 2 protections, including:

• Safe Links
• Safe Attachments
• Anti-impersonation policies
• User and account compromise detection
• Internal Microsoft 365 threat protection controls

Importantly, these protections were implemented without disrupting existing Proofpoint email routing or external filtering workflows.

To address mobile and BYOD security requirements, Data Networks introduced Intune Mobile Application Management (MAM) policies for iOS and Android devices without requiring device enrollment. App Protection Policies were configured to secure Microsoft 365 applications such as Outlook, Teams, and OneDrive using application PIN enforcement, selective wipe controls, data leakage prevention settings, and app-level protection policies.

In conjunction with Intune MAM deployment, Data Networks implemented app-based Conditional Access policies that restricted Microsoft 365 access to approved applications with active protection policies enforced. Microsoft Authenticator integration was validated to ensure secure token brokerage and seamless authentication experiences for mobile users.

The solution also unified telemetry and reporting visibility across Microsoft Entra ID, Defender, Intune App Protection, and Secureworks Taegis, improving the bank’s ability to detect, investigate, and respond to suspicious activity across identity, cloud, and mobile access workflows.

The project concluded with detailed configuration documentation, operational runbooks, governance recommendations, and knowledge transfer sessions covering Entra Cloud Sync, PIM workflows, Defender operations, Conditional Access management, and Intune App Protection administration.

Continued Value: Modern Banking Cybersecurity with Secure Mobile Access

The completed banking cybersecurity modernization initiative delivered a significantly stronger security and governance foundation for the local community bank while preserving critical existing investments in endpoint management and email security infrastructure.

The bank now benefits from modernized identity synchronization, centralized privileged access governance, expanded Microsoft 365 threat protection, and enhanced visibility into credential misuse, lateral movement, and suspicious authentication activity.

With Intune App Protection Policies and app-based Conditional Access controls now in place, employees can securely access Microsoft 365 resources from personal and non-Windows devices without requiring full device enrollment or intrusive management of personal hardware. This approach supports BYOD flexibility while maintaining strong application-level security and compliance controls.

The deployment also improved alignment with FFIEC examination expectations and NIST CSF 2.0 guidance by strengthening least-privilege enforcement, identity governance, threat detection, MFA enforcement, and audit readiness across the organization.

By integrating Microsoft security telemetry into Secureworks Taegis and consolidating reporting visibility across Entra ID, Defender, and Intune, the bank significantly improved its ability to correlate events, reduce operational blind spots, and streamline security operations.

Most importantly, the engagement modernized the bank’s Microsoft 365 security posture without disrupting existing operational workflows, replacing current endpoint management platforms, or altering the bank’s established Proofpoint email security architecture.

Tags: financial institution, commercial