Block Legacy Authentication for PCI DSS Compliance
Learn how ID-02 helps you meet PCI DSS requirements for Microsoft 365 and Entra ID security.
Meeting PCI DSS standards for Microsoft 365 involves implementing controls like ID-02 (Block Legacy Authentication). This guide covers the specific PCI DSS requirements addressed by this control and how to achieve compliance.
How ID-02 Addresses PCI DSS Requirements
PCI DSS requires organizations to implement controls around block legacy authentication. The ID-02 control provides:
- A Conditional Access policy blocks legacy authentication protocols (IMAP, POP3, SMTP, older Office clients)
- No exceptions for legacy protocols except documented service accounts
These measures directly support PCI DSS compliance by ensuring proper identity security in your Microsoft 365 environment.
Implementation for Compliance
To satisfy PCI DSS requirements with this control:
- **Enable the control** - Use TrueConfig's one-click remediation
- **Document your implementation** - Record how the control was configured
- **Maintain evidence** - TrueConfig automatically logs compliance status
- **Monitor continuously** - Track any deviations from the expected state
Evidence Collection
For PCI DSS audits, you'll need to demonstrate:
- Current configuration state
- Historical compliance data
- Remediation actions taken
- Continuous monitoring in place
TrueConfig provides all of this evidence through its audit trail and reporting features.
Why This Control Matters for PCI DSS
Legacy protocols like IMAP and POP3 cannot enforce MFA. Attackers specifically target these protocols to bypass your MFA policies. Blocking them closes a major attack vector.
Implementing ID-02 is an important step toward PCI DSS compliance. Combined with TrueConfig's continuous monitoring, you can demonstrate ongoing adherence to PCI DSS requirements.
Ready to achieve PCI DSS compliance?
TrueConfig continuously monitors your Microsoft 365 tenant for compliance with PCI DSS requirements, including this control.