Defining the ‘R’ in CDR: Webinar Highlights and Key Takeaways

Cloud environments introduce new cybersecurity challenges, requiring security teams to rethink how they detect, investigate, and respond to threats. The recent Cado Security webinar, Defining the ‘R’ in CDR: A Realistic Approach to Responding to Cloud Detections, explored these challenges and provided insights into effective cloud detection and response (CDR) strategies. Here are the key takeaways from the discussion.

What is CDR?

CDR, or Cloud Detection and Response, is an approach designed to address cloud-specific security threats. Unlike traditional security methods, CDR acknowledges the complexities of cloud environments, where threats evolve rapidly, and visibility can be fragmented across multiple services and providers.

The webinar emphasized that there isn’t a single, rigid definition of CDR. Instead, it should be an adaptable framework that aligns with the specific security needs of an organization. Cado Security’s approach to CDR incorporates:

• Continuous monitoring of cloud configurations and activity
• Threat detection using cloud-native logs and telemetry
• Automated investigation to reduce alert fatigue
• Incident response tailored for cloud environments

Why Does Response Matter?

Detection is only the first step, how organizations respond to threats determines the effectiveness of their security posture. The speakers highlighted that many security teams struggle with response due to a lack of predefined processes and cloud-native tools. Without a structured approach, responses become ad hoc, increasing the risk of errors and prolonged dwell times potentially leading to data breaches.

A well-defined response plan considers:

• Severity of detection: Not all detections require the same level of response.
• Confidence level: High-confidence detections warrant immediate action.
• Affected assets and sensitivity: Understanding the business impact of a compromised asset is critical.
• Compliance requirements: Industry regulations may dictate specific response actions.
• Observed attacker behavior: Contextualizing threats improves response efficiency.

How to Build an Effective Cloud Response Plan

Response plans should be flexible and context-driven, rather than one-size-fits-all. Organizations should consider:

• Automated response actions, such as isolating affected resources or revoking compromised credentials.
• Integration with SOAR platforms, enabling security teams to coordinate responses across their existing tools.
• Guided response suggestions, offering analysts pre-configured playbooks for common incidents.
• Forensic data collection, ensuring that sufficient evidence is available for deeper investigation.
• Collaboration with cross-functional teams, including IT, compliance, and legal teams, to ensure a comprehensive approach to cloud security.

A Practical Example: Response with Amazon EKS

One real-world example discussed in the webinar was incident response within an Amazon Elastic Kubernetes Service (EKS) environment. The complexity of EKS deployments often makes it difficult to centralize logs, requiring security teams to collect data from multiple sources, including:

• Containerized applications and web servers
• Kubernetes audit logs
• Network traffic mirroring
• Volatile system data
• Application and infrastructure logs for deeper insights

By leveraging automation, organizations can streamline forensic data collection, reducing incident response times from days to minutes. Additionally, automation can save ephemeral data that may be destroyed before the investigation team can get to it.

The Future of Cloud Response

As cloud threats continue to evolve, so too must security strategies. The webinar underscored that:

• Proactive security measures reduce response times and limit attack impact.
• Integration with existing security tools enhances efficiency and minimizes disruptions.
• Continuous learning and adaptation is key to staying ahead of emerging threats.

By embracing a cloud-native response framework, organizations can ensure they are equipped to handle sophisticated attacks with agility and precision.

Moving from Detection to Action

The webinar underscored that cloud security is about more than just detecting threats—it’s about responding effectively. Organizations that invest in automation, contextual investigation, and cloud-native response capabilities will be better equipped to handle cloud-based incidents.

For those who missed the live webinar, a full recording is available here.