|8 min read|Yvann Lièvre

XDR vs EDR: Which One to Choose in 2026?

EDR vs XDR vs NDR vs MDR comparison. CrowdStrike, SentinelOne, Microsoft Defender, HarfangLab. When each approach fits and how ThreatClaw completes the picture.

XDREDR

EDR, XDR, NDR, MDR... the detection and response ecosystem has become complex enough to give CISOs headaches. Behind the acronyms lie fundamentally different approaches. Here is a pragmatic guide to making the right choice in 2026.

EDR: the essential foundation

Endpoint Detection and Response focuses on a specific scope: endpoints (workstations, servers). An agent installed on each machine collects telemetry (processes, network connections, file modifications, Windows registry) and applies detection rules.

  • Strengths: granular endpoint visibility, local response capability (isolation, kill process), forensic investigation

  • Limitations: siloed view. An EDR cannot see network traffic between two machines, cloud logs, or email alerts

Key players: CrowdStrike Falcon (Gartner leader for 5 years), SentinelOne Singularity, Microsoft Defender for Endpoint, and on the French side HarfangLab (ANSSI-certified, sovereign, used by the French Ministry of Armed Forces).

XDR: cross-layer correlation

Extended Detection and Response extends detection beyond the endpoint by correlating multiple sources:

  • Endpoint: classic agent telemetry

  • Network: NetFlow, DNS analysis, TLS inspection

  • Email: phishing detection, malicious attachments

  • Cloud: AWS CloudTrail, Azure Activity Log, GCP Audit Log

  • Identity: Active Directory, Azure AD, authentication behavior

The major advantage: an XDR can link a phishing attempt (email layer) + a suspicious login (identity layer) + a payload download (endpoint layer) into a single correlated incident. An EDR alone only sees the last link.

Important: two models exist. "Native XDR" (single-vendor: CrowdStrike, SentinelOne, Palo Alto Cortex) requires the vendor's full ecosystem. "Open XDR" (multi-vendor) aggregates heterogeneous sources but requires more integration work.

NDR and MDR: the complements

NDR (Network Detection and Response)

Network traffic analysis through deep packet inspection and behavioral ML. Detects lateral movement, data exfiltration, and C2 communications invisible to EDR. Players: Darktrace, Vectra AI, ExtraHop.

MDR (Managed Detection and Response)

This is not a technology but a service: an outsourced SOC team that operates your EDR/XDR 24/7. Relevant when you lack the human resources to handle alerts internally. The MDR market reached $5.6 billion in 2025 (Gartner).

Comparison overview

  • EDR: endpoint-only coverage, agent-based detection, local response, cost $5-15/endpoint/month

  • XDR: multi-layer coverage, centralized correlation, orchestrated response, cost $15-40/endpoint/month

  • NDR: network-only coverage, flow analysis detection, no endpoint response, cost varies by bandwidth

  • MDR: coverage depends on underlying tool, 24/7 human service, cost $20-60/endpoint/month

When to choose what?

  • SMB <200 endpoints, limited budget: EDR (HarfangLab or Defender) + ThreatClaw as an AI correlation layer. You get advanced detection without full XDR cost

  • Mid-market with hybrid environment: Native XDR (CrowdStrike or SentinelOne) if you accept single-vendor, or EDR + ThreatClaw for an open approach

  • Enterprise with internal SOC: XDR + NDR for maximum coverage, ThreatClaw for response automation

  • No internal security skills: MDR as baseline, with ThreatClaw complementing for automated audits

ThreatClaw: the universal correlation layer

ThreatClaw is neither an EDR nor an XDR. It is an autonomous AI agent that connects to your existing tools and adds correlation intelligence and response capability. Whatever your stack (CrowdStrike, SentinelOne, Defender, HarfangLab, Wazuh), ThreatClaw ingests alerts and enriches them with its 26 CTI sources and 49 audit skills.

FAQ

Does XDR replace a SIEM?

No. XDR focuses on real-time detection and response. SIEM retains its role for long-term log retention, compliance reporting, and historical forensic investigations. The two are complementary.

Is HarfangLab on par with CrowdStrike?

HarfangLab is ANSSI-certified and offers solid detection capabilities, especially for France-targeted threats (built-in CERT-FR rules). On ML detection and multi-OS coverage, CrowdStrike remains ahead. The choice depends on your sovereignty constraints and budget.

How long does it take to deploy an EDR?

EDR agent deployment is quick: 1-2 days for the management server, then a few minutes per endpoint via GPO, SCCM, or Ansible. Tuning rules to reduce false positives takes 2-4 weeks.

Can ThreatClaw replace an MDR?

ThreatClaw automates a large portion of a SOC analyst's work (triage, enrichment, correlation, response). For SMBs, it can effectively replace an MDR service. For enterprises with strict compliance requirements, it complements MDR by accelerating alert processing.

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