ExtraHop named a Leader in the 2025 Forrester Wave™: Network Analysis And Visibility Solutions

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DETECTION OVERVIEW

NTLMv1 Authentication

Risk Factors

NTLMv1 is a challenge-response authentication protocol for authenticating Windows systems when Kerberos is unavailable. A skilled attacker can easily intercept NTLM hashes and crack passwords offline. A successful exploit of NTLMv1 authentication can also enable an attacker to launch machine-in-the-middle (MITM) attacks or take complete control of a domain.

Category

Hardening
Next in Hardening: Plaintext Credentials Received over HTTP

Attack Background

Mitigation Options

Restrict or disable NTLMv1 authentication and enable Kerberos for authentication

MITRE ATT&CK ID

Associated content

Announcing The Forrester Wave™: Network Analysis And Visibility Solutions, Q4 2025

Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.

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ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response — ExtraHop

ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response

News

Detections

Visit this resource for more information.

Docs

The 2025 ExtraHop Global Threat Landscape Report: The Alarming Reality of Threat Actor Dwell Time and Deeper Network Access — ExtraHop

This analysis exposes the critical link between an organization's lack of internal visibility and the escalating cost of compromise, demanding an urgent re-evaluation of how core business assets are protected.

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ExtraHop RevealX MITRE ATT&CK Coverage 2024 — ExtraHop

Learn why you need to be wary of the claims certain network detection and response providers make about their coverage against the MITRE ATT&CK framework.

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MITRE ATT&CK - Network Detection & Response with RevealX — ExtraHop

Learn how NDR from RevealX helps security teams detect and investigate more adversary TTPs in the MITRE ATT&CK framework than rule-based tools.

External
Periodic Table of Use Cases

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