In our ongoing series exploring the Department of Defense’s Continuous Authorization to Operate (cATO) model, we now turn our attention to two critical components: the Secure Software Supply Chain (SSSC) and DevSecOps practices. These elements form the backbone of a robust cATO implementation, ensuring both security and agility in software development and deployment.

Continuous Authorization to Operate (cATO) is changing the way organizations approach cybersecurity and compliance in dynamic IT environments. By embedding security directly into development and operational workflows, cATO enables real-time assessment, assurance, and authorization, promoting agility without compromising security.  An environment with effective personnel and processes is critical to achieving the intended goals and objectives of a cATO.

1. The Need for Continuous ATO in Modern Software Development

As software systems grow increasingly complex and interdependent, static and periodic compliance assessments fall short of ensuring security. Threats evolve faster than traditional systems and accreditation processes can adapt, creating vulnerabilities or weaknesses in the software supply chain and operational lifecycle.

The cATO approach addresses these challenges by shifting from static, point-in-time approvals to a dynamic, continuous assessment and authorization model. This shift requires integrating SSSC and DevSecOps as critical enablers of security, resilience, and agility.

Why Secure Software Supply Chains Matter

The software supply chain encompasses all components, dependencies, and processes involved in developing, deploying, and maintaining software applications. A compromised supply chain can lead to breaches that affect downstream systems, organizations, and even national security, as seen in incidents like the SolarWinds attack (SolarWinds, 2021) and XY/libzma.

Key principles for securing the software supply chain include:

1. Transparency and Traceability: Ensuring visibility into every component, dependency, and contributor in the supply chain.
2. Validation and Verification: Implementing mechanisms like digital signatures, cryptographic checks, and automated testing for integrity.
3. Continuous Monitoring: Using real-time analytics and monitoring tools to detect and mitigate threats early.

^[1] https://github.com/tukaani-project/xz/commit/e93e13c8b3bec925c56e0c0b675d8000a0f7f754

DevSecOps integrates security into every stage of the software development lifecycle (SDLC), fostering a culture of “secure by design.” By automating security practices and embedding them into CI/CD pipelines, DevSecOps enables organizations to meet cATO requirements effectively.

The Role of DevSecOps in cATO

Key DevSecOps practices include:

• Automated Security Testing: Tools like static application security testing (SAST) and dynamic application security testing (DAST).
• Infrastructure as Code (IaC) Security: Ensuring IaC templates are validated for security misconfigurations.
• Runtime Protections: Deploying application-layer protections to defend against runtime attacks.
  

2. Integrating SSSC and DevSecOps for cATO Competency

The intersection of SSSC and DevSecOps represents the synergy required for achieving cATO competency. Here’s how organizations can align these practices to enable secure, compliant, and resilient IT systems:

A. Building a Secure Software Supply Chain

1. Adopt a Zero-Trust Model: Assume every component in the supply chain is potentially compromised until proven otherwise.
2. Utilize Software Bills of Materials (SBOMs): Maintain comprehensive SBOMs for all software assets to track dependencies and vulnerabilities.
3. Leverage Automation: Use tools like dependency scanners and vulnerability management systems to identify and mitigate risks continuously.

B. Embedding DevSecOps Practices

1. Shift Left: Engage security teams early in the SDLC to identify issues before deployment.
2. Automate Compliance: Build compliance-as-code policies to ensure adherence to standards like NIST SP 800-53 or ISO 27001.
3. Enable Continuous Feedback: Implement feedback loops between development, security, and operations teams for iterative improvements.
   

3. Benefits of cATO with SSSC and DevSecOps

When organizations integrate SSSC and DevSecOps into their cATO strategies, they unlock several benefits:

• Reduced Risk: Continuous monitoring and validation reduce the likelihood of supply chain attacks and operational vulnerabilities.
• Increased Agility: Teams can deliver updates faster without waiting for manual approvals or periodic audits.
• Enhanced Compliance: Automated tools ensure real-time compliance with regulatory standards.
• Cost Efficiency: Early detection and mitigation of vulnerabilities lower the overall cost of security incidents.
  

4. Challenges and Solutions

Challenges

1. Cultural Resistance: Shifting to a DevSecOps mindset requires breaking silos and fostering collaboration.
2. Tool Overload: Integrating numerous tools can overwhelm teams and complicate workflows.
3. Skill Gaps: Teams may lack the expertise needed for advanced automation and security practices.

Solutions

• Conduct regular training and upskilling in DevSecOps concepts and tolls.
• Consolidate and standardize tools to streamline workflows.
• Adopt leadership-driven initiatives to promote a culture of security.
  

5. Conclusion

As organizations navigate increasingly complex cybersecurity landscapes, the adoption of cATO frameworks, supported by secure software supply chains and DevSecOps practices, is no longer optional—it’s essential. By embedding security into every layer of development and operations, organizations can achieve continuous assurance and resilience while staying compliant with evolving regulations.

With the right combination of people, processes, and technologies, cATO empowers organizations to innovate securely, keeping pace with the demands of modern IT ecosystems.

References

1. National Institute of Standards and Technology (NIST). (2021). NIST Cybersecurity Framework. Retrieved from NIST.gov.
   Referenced for zero-trust model and compliance automation in sections 2A and 2B.
2. OWASP. (2023). Software Assurance Maturity Model (SAMM). Retrieved from OWASP.org.
   Referenced for secure coding, DevSecOps practices, and addressing cultural challenges in sections 1, 2B, and 4.
3. Gartner. (2022). Best Practices for Securing Software Supply Chains. Retrieved from Gartner.com.
   Referenced for software supply chain transparency and challenges in sections 1, 2A, and 4.
4. SolarWinds. (2021). Post-Breach Analysis and Learnings. Retrieved from SolarWinds.com.
   Referenced for insights on supply chain attacks and their risks in sections 1 and 3.
5. IBM. (2022). DevSecOps Best Practices. Retrieved from IBM.com.
   Referenced for tools, automation, and addressing tool overload challenges in sections 1, 2, 3, and 4

In our previous posts, we introduced the foundations of cATO and explored the pivotal role of Continuous Monitoring (ConMon) in keeping federal systems secure and compliant. Now, we’re focusing on another crucial element of cATO: Active Cyber Defense (ACD). ACD is a proactive strategy designed to help agencies like the Department of Defense (DoD) and the Army combat increasingly sophisticated cyber threats.

What is cATO, and Why Does It Matter?

If you’re in the federal or defense world, you know the importance of an Authorization to Operate (ATO). It’s essentially a green light for systems to run, confirming they meet required security standards. However, the traditional ATO process is slow and rigid. You might secure approval today, but your system could face new vulnerabilities six months later. This is where cATO comes in.

cATO ensures systems maintain continuous compliance, allowing for faster deployment of technologies without sacrificing security. Unlike traditional ATOs, cATO emphasizes real-time risk assessments, continuous monitoring, and adaptive security measures, aligning with agile development practices.

The ACD-cATO Connection

ACD is a critical requirement for achieving and maintaining cATO for the DoD and its components. To qualify, organizations must demonstrate three key competencies:

1. Continuous monitoring of Risk Management Framework (RMF) controls
2. Active cyber defense (ACD) to respond dynamically to threats
3. Use of an approved DevSecOps reference design for secure software development and supply chain management

What is Active Cyber Defense (ACD)?

Think of ACD as moving from a “set it and forget it” strategy to one that is proactive, adaptive, and predictive. It’s not just about deploying tools—it’s about staying vigilant, hunting for threats, and even countering adversaries when necessary.

ACD aligns with cATO’s focus on continuous compliance. By adopting strategies outlined in NIST SP 800-53 and leveraging methodologies like the MITRE ATT&CK Framework, agencies can build robust defenses tailored to their mission requirements and threat landscapes.

Key Components of ACD

ACD relies on actionable intelligence to predict, identify, and counteract threats. To effectively implement the ACD pillar of cATO, several key components must be put in place.

Let’s break it down:

1. Threat Intelligence and Analysis

• Indicators of Compromise (IOCs): Unique identifiers like IP addresses or file signatures tied to known threats.
• Behavioral Analytics: Using machine learning to analyze unusual patterns in network traffic and flag potential risks.
• Collaborative Intelligence: Sharing threat data with other agencies, as outlined by CISA Cybersecurity Guidelines, to strengthen collective defenses.

2. Automated Threat Response: When a threat is detected, speed is key. This involves having robust mechanisms for detecting and mitigating threats as they emerge rather than relying on periodic scans or updates. The DoD memo on cATO emphasizes that “systems must be able to show a real, or near real-time ability to deploy appropriate countermeasures to thwart cyber adversaries” 1,2.

3. Hunt Teams and Incident Response: Automation doesn’t replace the need for skilled personnel. Hunt teams are the boots on the ground, proactively looking for signs of malicious activity and taking action to stop it. They analyze threat data, assess risks, and respond to incidents, guided by the latest intelligence. Agencies can quickly contain and recover from breaches with a well-defined incident response plan.

4. Deception Technology: Deception technology is a fascinating piece of the ACD puzzle. It creates decoys or traps within the network, drawing attackers away from real assets. By luring attackers into a controlled environment, agencies can gather intelligence on their tactics and buy themselves extra time to respond.

5. Continuous Monitoring and Real-Time Analytics: ACD must be integrated with the Continuous Monitoring (ConMon) pillar of cATO. This integration ensures that security data collected from various environments (development, test, and production) is used to inform and power active incident response. The flow of information between these systems is crucial for making real-time risk decisions and responding to threats efficiently.

The Army’s cATO Initiative

A recent SIGNAL media article by Evan Lynch highlights the U.S. Army’s implementation of the cATO framework, marking a significant shift in how the Army monitors and addresses cybersecurity risks. This initiative aligns closely with the principles of ACD we’ve been discussing and offers valuable insights for organizations implementing ACD and working towards cATO.

Key aspects of the Army’s cATO framework include:

1. Continuous Risk Monitoring: The Army’s cATO initiative leverages software and artificial intelligence to constantly observe and analyze cybersecurity risks, moving beyond periodic assessments.
2. Maturity-Based Evaluation: Instead of a checklist approach, the Army assesses the maturity of systems to determine their readiness for cATO.
3. Efficiency and Agility: By adopting cATO, the Army aims to streamline operations, allowing for quicker task completion and reducing administrative burdens.

The Army is leading by example with its adoption of cATO. Two of the key systems under this initiative include:

1. Nett Warrior: A tactical tool connecting field leaders to real-time network data for decision-making in combat.
2. Gabriel Nimbus: A big data platform facilitating analytics and multi-domain operations.

Leonel Garciga, the Army CIO, states this development marks a major shift in how Army officials monitor and address threats. He explained, “It’s really about understanding the risk of the software you’re delivering as opposed to our more compliance-based culture that we have today… We’re really focused on the threat-based understanding of what the environment looks like and making decisions on software we’re building based on the risks that we’re creating with that software.” 4

Best Practices for Implementing ACD

To earn and maintain cATO, organizations need to demonstrate they can handle threats as they emerge—not just during a biannual review.

• Integration with Cybersecurity Service Providers (CSSPs): A critical capability for effective ACD includes integrating CSSP sensors and tools to detect vulnerabilities and provide real-time threat intelligence. Select tools that integrate well with your existing infrastructure and provide real-time threat intelligence.
• Conduct Regular Assessments: Use external penetration tests and red team exercises to identify and remediate weaknesses.
• Maintain Security Testing and Documentation: Track system changes and assess their impact on the defense posture, ensuring continuous compliance.
• Incident Response Plan: A detailed incident response plan is key for effective ACD. This plan should include policies, procedures, defined roles, and training for all personnel involved in incident response.
• Provide Comprehensive Training: Ensure your team is trained on ACD principles and practices, including using security automation tools and incident response procedures.

Takeaways

We’re excited about the potential of Active Cyber Defense in cATO. ACD is an essential capability for achieving and maintaining cATO. It’s the linchpin of a security strategy that’s as dynamic as the threats it faces. The DoD is actively putting these principles into action, demonstrating that the concepts of ACD and cATO are not just theoretical but are actively being implemented at the highest levels of defense.

We see it as a game-changer for our clients to effectively integrate cutting-edge threat intelligence, advanced virtualization technologies, automated orchestration tools, and cloud-based security solutions within DevSecOps platforms. All of these come together to create a robust, dynamic defense system that’s always on, always learning, and always one step ahead of the bad guys.

If you’re interested in learning more about Continuous Authorization to Operate (cATO) and how to implement it effectively for your organization, contact BreakPoint Labs. Our team of experts can guide you through the process and help you develop a robust cybersecurity strategy tailored to your specific needs.

References

1 GovCIO Media & Research. (2022, February 4). DOD Releases New Continuous ATO Initiative for ‘Active’ Cybersecurity. https://govciomedia.com/dod-releases-new-continuous-ato-initiative-for-active-cybersecurity/

2 U.S. Department of Defense. (2022, February 3). Continuous Authorization To Operate (cATO). https://media.defense.gov/2022/Feb/03/2002932852/-1/-1/0/CONTINUOUS-AUTHORIZATION-TO-OPERATE.PDF

3 FedTech Magazine. (2022, September 9). ATO to cATO Cybersecurity Transition in The Federal Government. https://fedtechmagazine.com/article/2022/09/understanding-transition-authorization-operate-continuous-ato-perfcon

4. Lynch, E. (2024, May 28). U.S. Army Officials Launch New Way to Constantly Monitor Risks. SIGNAL Media. https://www.afcea.org/signal-media/cyber-edge/us-army-officials-launch-new-way-constantly-monitor-risks