Case Study: Enhancing Windows Login Security with Multi-Factor Authentication

July 10, 2025

Client Overview

Industry: Finance
Size: 20+
Location: Oakland, Ca



IT Environment: Primarily Windows-based infrastructure with centralized authentication through Active Directory.

Challenge

System alert unauthorized access detected on computer screen

The client faced increasing concerns around unauthorized access, especially with the rise of phishing attacks and credentia compromises. Their Windows-based systems lacked multi-factor authentication, making them vulnerable to password-based breaches.


Key issues included:

  • Lack of multi-factor authentication on critical systems.
  • Compliance requirements necessitating stronger access controls.
  • Users working remotely without an additional verification step.

Objective


Implement Duo MFA for Windows login to:


  • Secure local and remote login to Windows desktops and servers.
  • Meet compliance standards (e.g., HIPAA, CMMC, or others).
  • Minimize user disruption during the rollout.

Solution

Approach:

Precision IT Consulting implemented Duo MFA for Windows logins across all applicable endpoints, ensuring compatibility with existing Active Directory policies.


Steps Taken:


1. Assessment and Planning:

  • Evaluated existing infrastructure and endpoint types.
  • Identified target systems for Duo deployment.
  • Developed a phased rollout plan and user communication strategy.


2. Duo Configuration:

  • Integrated Duo with existing AD environment.
  • Set up Duo Admin Portal with user groups and policies.
  • Enabled 2FA for local logins via Duo Windows Logon client.


3. Pilot Deployment:

  • Conducted a pilot test on IT and management systems.
  • Gathered feedback and refined policies.


4. Full Rollout:

  • Deployed Duo client to all required machines using RMM/Group Policy.
  • Enrolled users via self-service and guided registration.
  • Configured fallback and offline access options as needed.


5. User Training and Support:

  • Provided documentation and support for Duo app installation.
  • Offered training sessions and helpdesk assistance during go-live.

Results


  • Improved Security: Significant reduction in unauthorized login attempts.
  • Compliance Achieved: Client met industry regulatory requirements for MFA.
  • User Adoption: Smooth adoption with minimal resistance due to comprehensive onboarding.
  • Scalability: Solution is scalable for future endpoint additions or policy changes.

Client Testimonial


“With Duo in place, we feel far more confident in our security posture. Precision IT made the transition seamless for our users.”


— [Client's Name, Title]

Technologies Used

  • Duo Security MFA
  • Microsoft Active Directory
  • Windows 10/11 and Windows Server OS
  • Group Policy (GPO) / RMM tool
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