A Comprehensive Guide to CMMC AC.2.010: Ensuring Adequate Security for FCI

Unlock the complexities of CMMC AC.2.010 and its critical role in protecting Federal Contract Information. A must-read guide for IT professionals.

Unraveling the Layers of CMMC AC.2.010: A Deep Dive for IT Professionals


The Cybersecurity Maturity Model Certification (CMMC) is an essential framework designed to safeguard Federal Contract Information (FCI) and Controlled Unclassified Information (CUI) within the defense industrial base. Among the diverse array of practices within the CMMC framework, AC.2.010 stands out as a pivotal practice dedicated to ensuring the adequate security of FCI.

What is CMMC AC.2.010?

Definition and Scope of AC.2.010

CMMC AC.2.010 is a practice under the Access Control domain. It mandates that organizations must use session lock with pattern-hiding displays to prevent access and viewing of data after a period of inactivity. This is critical for protecting FCI from unauthorized access and potential data breaches.

Interplay with Other CMMC Practices

While AC.2.010 focuses on session locks, its effectiveness is amplified when coupled with other CMMC practices such as AC.2.005, which requires the use of multi-factor authentication for local and network access to privileged accounts. Together, these practices fortify the defense mechanisms in place to secure FCI.

Why is CMMC AC.2.010 Important?

Protecting Federal Contract Information

FCI is often targeted by malicious actors due to its sensitive nature. AC.2.010 ensures that FCI is not left exposed and vulnerable during periods of inactivity, thereby safeguarding it from unauthorized access and potential compromise.

Mitigating the Risks of Data Breaches

Data breaches can have severe implications, including financial losses, reputational damage, and legal consequences. AC.2.010 serves as a proactive measure to mitigate these risks by automatically securing inactive sessions, thus preventing unauthorized access to FCI.

Implementing CMMC AC.2.010

Technical Measures

Implementation of AC.2.010 requires the integration of session lock mechanisms with pattern-hiding displays. This can be achieved through various software solutions and configurations tailored to the organization's specific needs and infrastructure.

Best Practices for Implementation

Organizations should conduct regular assessments to ensure the effectiveness of the session lock mechanisms. Additionally, training and awareness programs should be conducted to educate employees on the importance of logging out during periods of inactivity.


CMMC AC.2.010 is a crucial practice that plays a vital role in safeguarding Federal Contract Information from unauthorized access and potential data breaches. By implementing adequate session lock mechanisms and adhering to the best practices, organizations can significantly mitigate the risks associated with data breaches and uphold the highest standards of cybersecurity. As IT professionals, our responsibility is to stay abreast of these practices and strive to implement the necessary measures to protect our organizations and the critical data they handle.


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