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Introduction
CIS Benchmarks provide hardened security configurations, but strict adherence can sometimes break critical functionalities like Conditional Access policies in Microsoft Edge. This article explores the trade-offs between compliance and usability, offering practical workarounds for security professionals.
Learning Objectives
- Understand the conflict between CIS Benchmarks and Conditional Access in Microsoft Edge.
- Learn how to modify Edge policies without compromising security.
- Explore alternative hardening techniques for secure browsing.
You Should Know
1. The CIS Benchmark Conflict with Conditional Access
Issue: Enforcing certain CIS Benchmark settings for Microsoft Edge can disable device compliance checks in Conditional Access policies.
Verification Command (PowerShell):
Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" | Select-Object -Property<br />
Step-by-Step Explanation:
- This command checks applied Edge policies in the registry.
- If `DeviceComplianceEnabled` is set to
0, Conditional Access compliance checks will fail. - Modify the registry key to `1` to re-enable compliance:
Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -Name "DeviceComplianceEnabled" -Value 1
2. Hardening Edge Without Breaking Compliance
Alternative Security Settings:
Instead of disabling critical features, apply these mitigations:
Group Policy (GPO) Configuration:
1. Open Group Policy Management Editor.
2. Navigate to:
Computer Configuration > Administrative Templates > Microsoft Edge
3. Enable:
- “Configure Enhanced Security Mode” (for isolated browsing).
- “Block third-party cookies” (reduces tracking risks).
3. Auditing Edge Policy Conflicts
PowerShell Audit Script:
$EdgePolicies = Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge"
if ($EdgePolicies.DeviceComplianceEnabled -eq 0) {
Write-Warning "Conditional Access compliance is disabled!"
}
Remediation Steps:
- Review all CIS Benchmark settings affecting Edge.
- Test policies in audit mode before enforcement.
4. Conditional Access Workarounds
If compliance checks must remain strict, use Intune Compliance Policies as an alternative:
1. Navigate to Microsoft Endpoint Manager Admin Center.
2. Configure:
- “Require device to be marked as compliant” under Conditional Access.
- “Require approved client apps” for additional security.
5. Monitoring and Logging for Policy Conflicts
Azure Monitor Query (KQL):
SigninLogs | where ConditionalAccessPolicies !has "deviceCompliant" | summarize count() by UserPrincipalName
Action Plan:
- Set up alerts for non-compliant sign-ins.
- Adjust policies based on telemetry data.
What Undercode Say
- Key Takeaway 1: Blindly applying CIS Benchmarks can disrupt enterprise security workflows—always validate settings in a test environment.
- Key Takeaway 2: Conditional Access and Edge hardening must coexist; use layered security controls instead of outright disabling features.
Analysis:
Security teams often face the dilemma of compliance vs. functionality. While CIS Benchmarks are invaluable, they should be customized to fit organizational needs. Microsoft Edge’s integration with Azure AD and Conditional Access is critical for Zero Trust architectures. Instead of disabling compliance checks, adopt compensating controls like Intune policies or enhanced browser security modes.
Prediction
As cloud-based security policies evolve, expect tighter integration between CIS Benchmarks and Microsoft’s native compliance tools. Future Edge updates may include built-in bypasses for critical enterprise functions, reducing manual policy conflicts. Organizations that balance automation with customization will lead in secure browsing deployments.
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IT/Security Reporter URL:
Reported By: Nathanmcnulty While – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
