Webinar | SOC Talk: Automating Threat Response
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ReliaQuest's ShadowTalk is a weekly podcast featuring discussions on the latest cybersecurity news and threat research. ShadowTalk's hosts come from threat intelligence, threat hunting, security research, and leadership backgrounds providing practical perspectives on the week's top cybersecurity stories.
June 04, 2024
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EDR, MDR, and XDR are three different threat detection and response solutions. These tools, technologies, or services are employed by security teams to actively monitor, detect, and respond to threats in real-time.
Each plays a vital role with distinct capabilities and different levels of protection, management, and integration. Using a combination of the three can lead you to better defense, monitoring, and response, enabling improved visibility and a unified security process.
Endpoint Detection and Response (EDR) primarily focuses on endpoint security, providing visibility and control over potential threats on devices. Managed Detection and Response (MDR), on the other hand, is a service that combines EDR with security monitoring, threat hunting, and incident response provided by a team of experts. Extended Detection and Response (XDR) is a technology that extends beyond EDR detection to combine data from different security dimensions including endpoints, security information and event management tools (SIEMs), network security, cloud services, and threat intelligence. By ingesting, combining, and analyzing this data, an XDR architecture provides an understanding of an entire security ecosystem.
EDR helps organizations detect and respond to advanced threats on their endpoints, such as laptops, servers, and mobile devices. It employs various methods, such as behavior analysis and machine-learning algorithms, to detect and respond to security threats effectively. The capabilities of an EDR include:
MDR is a security service designed to enhance organizations’ protection against cyber threats. MDR services combine advanced threat detection, incident response, and continuous monitoring. Here are some of the key capabilities and features you can expect from an MDR provider:
XDR is a cybersecurity architecture that combines the capabilities of EDR, Network Detection and Response (NDR), and other security tools. While EDR technology looks at a single dimension (the endpoint), XDR architectures extend across multiple security dimensions. XDR aims to provide a centralized and holistic approach to threat detection, investigation and response across multiple security domains. Here are some of the key capabilities and features provided by an XDR architecture:
Before implementing solutions like EDR, MDR, or XDR, it’s crucial to assess your organization’s security program and the provider’s capabilities. This assessment ensures that the chosen solution aligns with your needs and fills any existing gaps. To evaluate your security program, consider the following factors:
Security Requirements
Assess your organization’s security requirements and priorities. Consider factors including the size of your organization, industry regulations, and your risk tolerance. This will help you determine the level of security coverage and capabilities you need.
Internal Resources and Expertise
Evaluate your organization’s internal resources and level of cybersecurity expertise. EDR solutions are typically implemented and managed by internal IT and security teams, which require a higher level of technical skill and resources.
MDR and XDR approaches, on the other hand, can combine technology and services to assist with the monitoring and response processes. It’s important to assess whether your organization possesses the internal capabilities required or if you would prefer to leverage external expertise for these security solutions.
Security Capabilities and Coverage
Look into the provider’s security capabilities and coverage across different security domains. For EDR providers, see what features they have for endpoint monitoring, threat detection, response, and forensics.
For MDR and XDR providers, consider how broad their coverage is across a security technology stack that includes endpoints, network security, identity, cloud assets and applications.
Also, consider whether the providers support multiple technology vendors in the same product category (SIEM, EDR, and so forth), as your security toolset may change in the future.
Compatibility and Integration
Consider the compatibility and integration requirements with your existing security tools and infrastructure. EDR solutions often integrate well with other endpoint security tools, whereas MDR and XDR solutions may offer broader integration capabilities across various security domains, allowing for better correlation and analysis of security events.
Evaluate how well MDRs and XDRs can integrate and exchange data with other security solutions in your environment, such as multiple SIEM or EDR investments, network security tools, identity and access management solutions, threat intelligence platforms, or vulnerability management tools.
Comprehensive Threat Visibility
Consider the level of threat visibility required by your organization. EDR solutions provide deep visibility into endpoints. On the other hand, MDR and XDR approaches offer broader visibility across multiple security domains such as endpoints, networks, and cloud environments. Determine whether your organization needs a consolidated view of threats across various vectors for better context and comprehensive security operations.
Detection and Alerting
Consider the provider’s detection and alerting abilities. Particularly for MDR and XDR providers, the speed with which threat detections can be deployed across a heterogenous environment varies widely. Providers vary greatly in their ability to sift through false-positive and duplicate alerts to surface what matters.
Look for real-time monitoring, continuous threat detection, and timely alerting mechanisms. Think about whether the provider offers contextual alerts, actionable insights, and access to a centralized security dashboard for better visibility and situational awareness.
Incident Response Capabilities
Evaluate your organization’s incident response capabilities. EDR solutions typically rely on your internal team to respond to and investigate incidents, requiring sufficient technical expertise and resources. MDR and XDR approaches often provide incident response services as part of their offering, facilitating prompt and coordinated response to security incidents.
For MDR and XDR approaches, assess how well they can promptly respond to security incidents and then coordinate with your internal teams and external digital forensic incident response organizations you may have on retainer. Check predefined incident response playbooks, incident management processes, and the availability of experienced security analysts.
Threat Intelligence Integration and Threat Hunting
For MDRs and XDRs, see how the provider incorporates threat intelligence into their solution. Look for partnerships with reputable threat intelligence providers, integration with external threat intelligence feeds, and proactive threat hunting capabilities. Effective integration of threat intelligence enhances the provider’s ability to detect and respond to sophisticated threats.
Support and Customer Care
Look for options for 24/7 support, dedicated customer success managers, and a knowledgeable support team. Consider their responsiveness and ability to address any issues or questions you may have during the evaluation and implementation process.
Scalability and Futureproofing
Determine whether the solution can scale as your organization grows and if it can adapt to new technologies, such as new cloud security services, IoT. MDR and XDR solutions, with their broader coverage and flexibility, often provide better scalability and future-proofing capabilities.
While EDR is a foundational security tool that every organization needs, MDR solutions are often the go to choice for organizations that need to monitor and respond to threats quickly. However, they often have limitations, particularly for organizations that are looking to improve their security posture and grow their security maturity. ReliaQuest’s GreyMatter, an Open-XDR platform, offers a comprehensive approach to security operations. With GreyMatter, you can gain better visibility into threat investigations, automate playbooks with bi-directional integrations with your existing tech stack, and monitor security operations for gaps and improvement over time.
Get a live demo of our security operations platform, GreyMatter, and learn how you can improve visibility, reduce complexity, and manage risk in your organization.