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XDR Security: What It Is, How It’s Different, and Why You Need It

You already know what MDR and EDR entail, but you have yet to be educated on XDR. Well, that’s why we’re here. Castra works with premier XDR security providers, and you can benefit from our expertise. From what XDR is and how it’s different, to the benefits it brings and how to pursue an XDR solution, you’ll leave here educated and confident in your choice to choose Castra.

Now, on to the specifics.

What Is XDR?

XDR security (extended detection and response) is a SaaS-based, vendor-specific threat detection and incident response tool. It enables enterprises to go far beyond typical MDR (managed detection and response) and EDR (endpoint detection and response) detective controls by natively integrating multiple licensed security products and components into one holistic, comprehensive system. 

XDR automatically compiles and correlates massive amounts of data across multiple security layers, such as:

  • Emails
  • Endpoints
  • Servers
  • Cloud workloads
  • Network systems

This unified, logical consolidation of real-time threat information delivers faster, superior outcomes by taking five steps to secure threatened data: 

  1. Hunt: Threat hunting is proactive defense. It comprehensively searches networks, endpoints, and datasets to uncover threats before an attack can take place. Hunting helps XDR cybersecurity reveal hidden and highly sophisticated threats, risks, and attacks.
  2. Collect: SIEM Exabeam performs the essential collection of incalculable log data and behavioral analytics to weed out admissible events and aggregate relevant events to ensure IT teams work intelligently and efficiently. 
  3. Detect: Threat detection recognizes active cybersecurity threats. Using XDR security partnered with Anomali ThreatStream, you can gather, analyze, prioritize, and track threats across impressive amounts of data. In 2020, 16% of organizations detected more than 100,000 daily security alerts. Since the only way to respond to threats is to be aware of them in the first place, you need XDR detection.  
  4. Investigate: With so many threats coming your way, personally responding to each and everyone is out of the question, which is why Palo Alto XDR applies machine learning, analytics, and automation to threat investigation for a new breed of security technology. It’s supremely accurate and accelerates investigations far beyond what you’ve yet to experience.  
  5. Respond: Responding to actual threats that require attention is enhanced by the speed of the hunt, detection, and investigation phases of XDR security. Isolating endpoints, terminating processes, and blocking additional executions prevent data loss and other malicious activity in your environment.

Castra's approach to XDR


Castra's recommendation is to integrate Exabeam or USM Anywhere SIEM with Anomali ThreatStream, and Palo Alto Cortex. Each technology feeds into each other to best protect not only your environment but also feed your SIEM with essential intelligence to ward off future indicators of compromise.

How Is XDR Different from EDR?

XDR is a standalone tool, while MDR is a service that acts as an extension to a security or IT team. 

XDR is the logical evolution of EDR. Yes, they both offer data-driven solutions to defend security matters, optimize costs and impacts, and offer rooted visibility. However, XDR cybersecurity offers an integrated, more innovative approach for enterprise security architecture. In fact, the top seven best-performing security companies use XDR technology.  

What Are the Benefits of XDR?

There are plenty of benefits XDR offers that must not be undervalued when considering this security threat detection and incident response tool. Here are the top five benefits of choosing XDR:

  1. 360-Degree View into Your Security Landscape. Security experts can expose threats on any security layer and analyze how and where an attack takes place and how far it spreads.  
  2. Instantaneous Detection and Response. Advanced and rapid efficiencies control risks to allow for a deft response that goes beyond the basics to dive deep into the entire, extensive security ecosystem.
  3. Simplified Investigations that Connect Related Events. In a single dashboard, teams are shown exactly what has been compromised and are given the ability to allowlist or blocklist traffic and activity based on consolidated threat information.
  4. Improved Productivity of Operational Security Personnel. Automation and other advanced efficiencies allow your IT team to use its resources more wisely to focus on other high-priority projects.
  5. Lowered Total Cost of Ownership. Between breach protection, detection, investigation, and increased efficiency and productivity, your organization simply can’t afford to pass up on integrating an XDR solution to enhance your security.  

These benefits are precisely the reason your business will value every feature XDR security has on offer. 

How Can I Protect My Business?

With XDR cybersecurity, you get an ecosystem replete with orchestrated protection so you’re not one of the 40% of companies who go out of business after a data breach.  

Go straight to the top to find the right XDR solution for you. Get in touch with Castra today.