Category: InsightIDR

Demystifying XDR: The Time for Implementation Is Now

In previous installments of our conversation with Forrester Analyst Allie Mellen on all things extended detection and response (XDR), she helped us understand not only the foundations of the product category and its relationship with security information and event management (SIEM), but also the role of automation and curated detections. But Sam Adams, Rapid's VP of Detection and Response, still has a few key questions, the first of which is: What do XDR implementations actually look like today?

A tale of two XDRs

Allie is quick to point out what XDR looks like in practice can run the gamut, but that said, there are two broad categories that most XDR implementations among security operations centers (SOCs) fall under right now.

XDR all-stars

These are the organizations that "are very advanced in their XDR journey," Allie said."They are design partners for XDR; they're working very closely with the vendors that they're using." These are the kinds of organizations that are looking to XDR to fully replace their SIEM, or who are at least somewhat close to that stage of maturity.

To that end, these security teams are also integrating their XDR tools with identity and access management, cloud security, and other products to create a holistic vision.

Targeted users

The other major group of XDR adopters is those utilizing the tool to achieve more targeted outcomes. They typically purchase an XDR solution and have this running alongside their SIEM — but Allie points out that this model comes with some points of friction.

"The end users see the overlapping use cases between SIEM and XDR," she said, "but the outcomes that XDR is able to provide are what's differentiating it from just putting all of that data into the SIEM and looking for outcomes."

Demystifying XDR: The Time for Implementation Is Now

The common ground

This relatively stratified picture of XDR implementations is due in large part to how early-stage the product category is, Allie notes.

"There's no one way to implement XDR," she said. "It's kind of a mishmash of the different products that the vendor supports."

That picture is likely to become a lot clearer and more focused as the category matures — and Allie is already starting to see some common threads emerge. She notes that most implementations have a couple things in common:

  • They are at some level replacing endpoint detection and response (EDR) by incorporating more sources of telemetry.
  • They are augmenting (though not always fully replacing) SIEM solutions' capabilities for detection and response.

Allie expects that over the next 5 years, XDR will continue to "siphon off" those uses cases from SIEM. The last one to fall will likely be compliance, and at that point, XDR will need to evolve to meet that use case before it can fully replace SIEM.

Why now?

That brings us to Sam's final question for Allie: What makes now the right time for the shift to XDR to really take hold?

Allie identifies a few key drivers of the trend:

  • Market maturity: Managed detection and response (MDR) providers have been effectively doing XDR for some time now — much longer than the category has been defined. This is encouraging EDR vendors to build these capabilities directly into their platforms.
  • Incident responders' needs: SOC teams are generally happy with EDR and SIEM tools' capabilities, Allie says — they just need more of them. XDR's ability to introduce a wider range of telemetry sources is appealing in this context.
  • Need for greater ROI: Let's be real — SIEMs are expensive. Security teams are eager to get the most return possible out of the tools they are investing so much of their budget into.
  • Talent shortage: As the cybersecurity skills shortage worsens and SOCs are strapped for talent, security teams need tools that help them do more with less and drive outcomes with a leaner staff.
Demystifying XDR: The Time for Implementation Is Now

For those looking to begin their XDR journey in response to some of these trends, Allie recommends ensuring that your vendor can offer strong behavioral detections, automated response recommendations, and automated root-cause analysis, so your analysts can investigate faster.

"These three things are really critical to building a strong XDR capability," she said,"and even if it's a roadmap item for your vendor, that's going to give you a good basis to build from there."

Want more XDR insights from our conversation with Allie? Check out the full talk.

Additional reading:

SIEM and XDR: What’s Converging, What’s Not

Let’s start with the conclusion: Security incident and event management (SIEM) isn’t going anywhere anytime soon.

Today, most security analysts are using their SIEMs for detection and response, making it the core tool within the security operations center (SOC). SIEM aggregates and monitors critical security telemetry, enables companies to monitor and detect threats specific to their environment and policy violations, and addresses key regulatory and compliance use cases. It has served – and will continue to serve – very important, specific purposes in the security technology stack.

Where SIEMs have traditionally struggled is in keeping pace with the threat landscape. It expands and changes daily. Very, very few security teams have the resources to consume all the relevant threat intelligence, then create the rules and configure the detections necessary to find them.

Rapid7’s SIEM, InsightIDR, is the exception, designed with a detections-first approach.

InsightIDR leverages internal and external threat intelligence, encompassing your entire attack surface. Our detection library includes threat intelligence from Rapid7’s open-source community, advanced attack surface mapping, and proprietary machine learning. Detections are curated and constantly fine-tuned by our expert Threat Intelligence and Detections Engineering team.

InsightIDR is the only SIEM that can actually do extended detection and response (XDR). And we can’t help but think all the XDR buzz is the security industry’s way of letting you know that, yes, detection and response performance is still lacking.

A cloud SIEM can provide a strong XDR foundation — agile, tailored, adaptable, and elastic

A cloud SIEM approach gives you an elastic data lake that lets you collect and process telemetry across the environment. And the core benefits of SIEM are yours: log retention, fast and flexible search, reporting, and the ability to fine-tune and customize policy violations or other rules specifically for their environment or organization. Cloud SIEM with user and entity behavior analytics (UEBA) and correlation capabilities can already achieve XDR, tying disparate data sources together to normalize, correlate/attribute, and analyze.

Of course, some customers that purchased traditional SIEM for detection and response haven’t been able to get those outcomes. They don’t have a next-generation SIEM that supports big data and real-time event analysis. Perhaps machine learning and behavioral analytics aren’t there yet.

Or maybe the SIEM has security teams drowning in alerts, ignoring too many of them. Detection and response is really hard — and it really is a symphony — especially as the environment continues to sprawl and resources remain scarce.

XDR aims to solve the challenges of the SIEM tool for effective detection and response to targeted attacks and includes behavior analysis, threat intelligence, behavior profiling, recommendations, and automation. The foundation is everything.

When we introduced InsightIDR some time ago, some criticized it as trying to do “too much”

It turns out we were doing XDR.

Today, our highly manicured detections library is expertly vetted by our global Rapid7 Managed Detection and Response (MDR) SOC, where we also get emergent threat coverage. It’s single-platform, integrated with raw threat intel from Rapid7’s open-source communities (Metasploit, Heisenberg, Sonar, Velociraptor) and strengthened signal-to-noise following our acquisition of IntSights external threat intelligence.

Call it what you like

SIEM and XDR are described as “alternatives,” “complementary,” and also barreling toward one another destined to collide. We’ve read how one is dead and the other is the future. (Must it always be this way?)

No matter what you call it, focus on the outcomes, not the acronyms. It's easy to get lost in the buzz, but the best products for your business will be those that address your top priorities.

Additional reading:

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