Conditional Access is a security feature in Microsoft Entra ID (formerly Azure AD) that controls how and when users can access cloud resources. It evaluates signals such as user identity, device health, location, and application to enforce access policies. This helps balance security and usability by allowing trusted users to work unhindered while blocking or challenging risky sign-ins.
Key Recommendations:
1. Require MFA for All Users: Enforce multi-factor authentication (MFA) to add an additional layer of security.
2. Block Legacy Authentication: Disable older authentication methods that are more susceptible to attacks.
3. Ensure Compliance with Terms of Use: Require users to acknowledge and comply with corporate terms before accessing resources.
4. Require Device Compliance: Ensure that only compliant devices can access sensitive resources, enforcing policies like encryption and antivirus protection.
5. Limit Access by Location: Restrict access to trusted locations, blocking risky sign-ins from unfamiliar regions.
6. Secure Access to Admin Accounts: Apply stricter policies, such as requiring MFA and limiting access to specific devices, for administrative accounts.
7. Monitor and Review Policies Regularly: Continuously review and update Conditional Access policies based on evolving threats and organizational needs.
Implementing these recommendations helps create a robust Conditional Access strategy, enhancing security while maintaining a seamless user experience.