EDR vs XDR vs NDR — detection technology comparison (2026)

EDR vs XDR vs NDR — detection technology comparison (2026)

NDR and EDR — how do they work together? EDR sees what happens on a device with an installed agent: processes, files, connections. NDR applies behavioral analytics to network traffic — including traffic between servers inside the network — and needs no agent, so it also covers devices that cannot run an EDR agent, such as IoT. Together they close the gap between the host and the network, and XDR combines both data streams in one platform. We cover each technology separately: EDR, NDR and XDR.

The cybersecurity market is flooded with acronyms: EDR, XDR, NDR, ITDR, MDR, SIEM, SOAR. Understanding the differences between them determines whether you spend budget on the right tool. In this guide, we compare four key categories — EDR, XDR, NDR, ITDR — from a SOC architect’s perspective.

TL;DR — quick decision

• Up to 100 endpoints, no SOC: EDR + email security separately
• 100-1000 endpoints, own SOC: EDR + NDR (or initial XDR)
• 1000+, MDR/MSSP or 24/7 SOC: XDR (consolidation) + ITDR
• Regulated (NIS2, PCI): XDR + SIEM (XDR for detection, SIEM for 6-12 month log retention)
• Active Directory dominant: dedicated ITDR (Semperis, Tenable Identity)

Definitions and scope

EDR — Endpoint Detection and Response

Sees: processes, files, registry, API calls, network connections ON HOST. Data source: agent on endpoints. Typical detections: malware, ransomware, fileless attacks, credential dumping, persistence. Action: host isolation, kill process, remediation playbooks. Vendors: CrowdStrike Falcon, Microsoft Defender for Endpoint, SentinelOne, Trellix, Palo Alto Cortex XDR (EDR component).

NDR — Network Detection and Response

Sees: packets, flow (NetFlow, sFlow, IPFIX), DNS, TLS metadata, HTTP headers. Data source: SPAN port, TAP, inline sensors, virtual sensors in cloud. Typical detections: lateral movement, C2 beaconing, data exfiltration, DNS tunneling, reconnaissance scans. Action: alerts to SIEM/XDR, firewall integration (block), session reset. Vendors: ExtraHop, Vectra AI, Darktrace, Cisco Secure Network Analytics (Stealthwatch), Corelight, Gigamon.

XDR — Extended Detection and Response

Sees: all layers — endpoint, network, email, cloud, identity. Data source: EDR + NDR + email gateway + CASB + IAM. Typical detections: multi-stage attacks with correlation (e.g., phishing email → malware on endpoint → lateral movement → cloud exfil). Action: cross-domain response (isolate endpoint + block user + quarantine email). Vendors: CrowdStrike Falcon XDR, Microsoft Defender XDR, SentinelOne Singularity, Palo Alto Cortex XDR, Trellix XDR, Fortinet FortiXDR.

ITDR — Identity Threat Detection and Response

Sees: Active Directory, Azure AD, Okta activity, Kerberos tickets, LDAP queries, service principals. Data source: domain controller logs, Azure AD audit, SIEM feeds. Typical detections: Kerberoasting, Golden/Silver Ticket, DCSync, Pass-the-Ticket/Hash, orphan accounts, privilege escalation. Action: force password reset, disable account, revoke sessions, MFA challenge. Vendors: Semperis DSP, Tenable Identity Exposure (Alsid), Microsoft Defender for Identity, Silverfort, Quest On Demand Audit.

Comparison table

Dimension	EDR	NDR	XDR	ITDR
Layer	Endpoint	Network	Multi-layer	Identity
Data source	Agent	SPAN/TAP/flow	EDR+NDR+email+cloud+IAM	AD/Azure AD/Okta
Detection type	Host-level threats	Network-level threats	Cross-domain attacks	Identity-based attacks
Action	Isolate host, kill proc	Alert, FW integration	Cross-domain response	Reset, disable, revoke
Deployment	Agent on endpoints	Sensors in network	Platform + agents	DC/IdP integration
Typical detections	Ransomware, malware	Lateral movement, C2	Multi-stage attacks	Kerberoasting, Golden Ticket
Price (per endpoint/year)	$30-80	Sensor model	$50-150	$15-40
Best for	Any company >10 endpoints	Medium and large	500+ endpoints, SOC	AD-centric enterprises

When EDR is enough, and when you need more?

EDR alone is sufficient when:

• Company <100 endpoints
• No own SOC (MSSP handles EDR)
• Infrastructure mainly endpoint-centric (laptops, small office)
• Cyber budget <$50k/year

Add NDR when:

• Environment >100 endpoints with lateral movement risk
• You have network segmentation and want to enforce it
• Suspect insider threats or APT
• Significant OT infrastructure (manufacturing, energy)

Choose XDR when:

• Environment >500 endpoints
• You have SOC (in-house or MDR) handling alerts
• Want consolidation (fewer consoles, fewer vendors)
• Using cloud (cloud workloads, SaaS)
• Budget $125-750k/year

Add ITDR when:

• Active Directory is critical (finance, admin access)
• History of identity attacks (Kerberoasting in pentest)
• Ready for Zero Trust and hybrid AD/Azure AD
• Enterprise with 10k+ accounts Whichever option you choose, EDR remains the foundation, and its value depends on who assesses the alerts. If an organization has no one to handle endpoint signals as they come in, it can hand this work over through the Managed EDR/XDR service.

Vendors 2026 — Magic Quadrant leaders

EDR — Gartner MQ 2024 Leaders

1. CrowdStrike Falcon — cloud-native, best detection
2. Microsoft Defender for Endpoint — value if you have E5
3. SentinelOne Singularity — AI-native, good autoresponse
4. Trellix (McAfee+FireEye) — enterprise incumbent
5. Palo Alto Cortex XDR (EDR component)

XDR — key players

1. CrowdStrike Falcon XDR
2. Microsoft Defender XDR (E5 license)
3. SentinelOne Singularity XDR
4. Palo Alto Cortex XDR
5. Fortinet FortiXDR (for Fortinet ecosystem clients)

NDR — Gartner Voice of Customer

1. ExtraHop Reveal(x) — best packet analysis
2. Vectra AI Cognito — AI-driven
3. Darktrace — Enterprise Immune System
4. Cisco Secure Network Analytics (Stealthwatch)
5. Corelight — Zeek-based, forensic depth

ITDR — leading

1. Semperis DSP — AD recovery + ITDR
2. Tenable Identity Exposure (Alsid)
3. Microsoft Defender for Identity
4. Silverfort — MFA everywhere + ITDR
5. Quest On Demand Audit

Architecture: how to connect it all

[Endpoints] → EDR (CrowdStrike)
                 ↓
[Network traffic] → NDR (Darktrace)
                 ↓
[Email] → Email Security (Proofpoint, Abnormal)   → XDR platform → SOC analyst
                 ↓
[Cloud] → CASB + CSPM (Netskope, Wiz)             → SIEM (long-term) → compliance
                 ↓
[AD / Azure AD] → ITDR (Semperis)
                 ↓
[Orchestration] → SOAR (XSOAR, Splunk SOAR) — automated response

Key principle: XDR = detection and response, SIEM = log storage for compliance and forensics (6-12 months retention required by NIS2, PCI).

Explore our services

• SOC as a service
• Security audits
• Penetration testing
• Virtual CISO

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Related topics

See also:

• NIS2 for hospitals — implementation and funding
• Security Audit Pricing Calculator

Frequently asked questions

What is the difference between EDR and XDR?

EDR (Endpoint Detection and Response) monitors and responds to threats ON INDIVIDUAL ENDPOINTS (laptops, servers, containers) — it sees processes, files, registry, network connections from the host. XDR (Extended Detection and Response) EXTENDS EDR with data from other sources: network (NDR), email, cloud workloads, identity (ITDR). XDR correlates events across multiple layers for broader attack context. In practice: XDR = EDR + NDR + email security + cloud detection in one console.

How does NDR differ from EDR?

NDR (Network Detection and Response) monitors NETWORK TRAFFIC — packet capture, flow (NetFlow/sFlow), DNS, TLS metadata. It sees network threats: lateral movement, C2 beaconing, data exfiltration, DNS tunneling. EDR sees events on hosts but does not see traffic between hosts at network level. Both are complementary — EDR for endpoint-level threats, NDR for network-level. XDR combines them into one system.

What is ITDR?

ITDR (Identity Threat Detection and Response) is a specialized detection category focused on IDENTITY THREATS — attacks on Active Directory, Azure AD, Okta. It detects: Kerberoasting, Golden Ticket, DCSync, Pass-the-Ticket, privileged access abuse, orphan accounts. Vendors: Semperis, Tenable Identity Exposure (formerly Alsid), Microsoft Defender for Identity. ITDR is increasingly becoming an XDR module (Microsoft Defender XDR, CrowdStrike Falcon Identity Protection).

When is EDR enough, when do you need XDR?

Selection guidelines: (1) SMALL COMPANY (<100 endpoints) — EDR is enough, add email security and cloud detection separately. (2) MEDIUM (100-1000) — start with EDR + NDR, consider XDR for consolidation. (3) LARGE/ENTERPRISE (1000+) — XDR + ITDR, 24/7 SOC essential for alert handling. (4) REGULATED (bank, hospital, government) — XDR + SIEM (XDR is detection, SIEM is long-term storage and compliance). Don't buy XDR without SOC — you'll have mountain of alerts and nobody for triage.

Top XDR vendors 2026?

Gartner Magic Quadrant 2024 leaders: (1) CrowdStrike Falcon XDR — native cloud, best detection rate, premium price, (2) Microsoft Defender XDR — strong Microsoft ecosystem integration, good value if you have E5, (3) SentinelOne Singularity — AI-native, good autoresponse, (4) Palo Alto Cortex XDR — enterprise, NGFW integration, (5) Trellix — consolidation, large installed base. Cloud: AWS GuardDuty + Security Hub, Azure Defender, GCP SCC. Fortinet FortiXDR — good value for FortiGate ecosystem clients.

How do NDR and EDR work together?

EDR collects data from devices with an agent — processes, files, connections — while NDR analyzes network traffic and detects unusual behavior in it without installing agents. When an attack passes through a device without an agent or moves between servers, NDR sees it on the network and EDR on the hosts it protects. XDR can combine both sources into a single incident view.

Does NDR require installing agents on devices?

No. NDR analyzes network traffic from sensors — hardware appliances, virtual appliances or cloud services — so it also sees devices that do not support an EDR agent, such as IoT. That is why NDR complements EDR rather than replacing it.