Extended Detection and Response (XDR) Platforms
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What are Extended Detection and Response (XDR) Platforms?
Extended Detection and Response (XDR) platforms centralize and automate the analysis and remediation of security threats across an organization. XDR specializes in improved visibility and analytics across endpoints, cloud infrastructure, and on-premise networks. This makes XDR highly useful for simplifying management and enforcing consistent policies across hybrid environments.
XDR tools aggregates data from across the enterprise, utilizing the work that SIEMs have historically done. XDRs then leverage threat intelligence and AI-driven data analytics to automate responses to given threats across disparate systems. The greater focus on analytics lets XDR more proactively and automatically identity and respond to new and known threats. Many XDR platforms also employ thread hunting-- identifying and remediating threats before they are exploited by an attacker and an incident actually occurs.
XDR provides several benefits to organizations that deploy it. In particular, it centralizes and consolidates security systems and data into a single console for analyzing and responding to security threats. This is particularly valuable in hybrid environments, with a mix of on-premise and cloud-based security systems. XDR tools’ more advanced analytics can also lead to more accurate alerting, with fewer false positives that often overwhelm other security systems.
XDR is closely related to SIEM and SOAR products, with some key differences. XDR has a much more robust level of integration with other security systems compared to SIEM, which have traditionally been the security data aggregators of choice. XDR also has more direct connections to detection methods via direct tools or APIs. SOAR tools tend to be a step or two more removed from the data source than XDR, with an accompanying performance hit.
XDR vs. EDR
Extended Detection and Response can in many ways be considered an evolution of endpoint detection and response (EDR), itself a subset of endpoint security. Both are designed to change an organization’s security posture from legacy reactive stances to proactive activities like threat hunting.
The key distinction between the two is the difference in scope. EDR excels at centralizing data and determining next step actions related to endpoints specifically. XDR is broader than just endpoints. XDR also covers network security and cloud-based systems. XDR in many ways encompasses EDR. When choosing between the two, EDR can be considered best-in-breed for endpoint protection specifically, while XDR focuses on centralization and integrated security across an organization.
Extended Detection & Response Comparison
When comparing XDR platforms, consider these factors:
- Automation: How much can be “set and forget” in terms of security policies and alert systems? The scope and quality of automation and ML modelling can drastically impact the value of a given XDR engine.
- Alert Management: How easily can users manage what actions or data sets off an alert? What false positive rates do existing users normally experience? Reviewers will often highlight when a product is particularly good (or poor) at this function.
- Reporting: How usable is the built-in reporting, and how easy are ad hoc reporting capabilities? Consider if and how users will need to report on alerts, incidents, response times, etc. to leadership or other stakeholders.