Topic starter
02/08/2026 12:16 pm
TL;DR: EDR can look healthy on dashboards while still missing credential-driven attacks, according to Horizons.ai. Endpoint assurance has to test whether controls catch legitimate-channel abuse, not just malware or obvious exploits.
Editorial analysis by NHI Mgmt Group, based on content published by Horizons.ai: “Endpoint Detection and Response: What It Is and How to Know Yours Is Working”.
Key questions
Q: Why do compromised credentials make endpoint attacks harder to stop?
A: Compromised credentials let attackers behave like legitimate users or admins, which reduces the value of file-based detection.
Q: What are the warning signs that EDD is failing in practice?
A: The warning signs are repeated manual overrides, weak source-of-funds evidence, unclear beneficial ownership, and alerts that do not reopen the case when risk changes.
Q: What breaks when EDR only proves agent coverage?
A: Coverage shows the endpoint is reporting, but it does not prove the control will catch an attacker using valid credentials, native administration tools, or low-noise execution paths.
Practitioner guidance
- Validate EDR against credential-led intrusion paths Test whether your endpoint controls detect authentication through legitimate administrative channels, not only malware or exploit-based intrusion.
- Correlate endpoint alerts with identity and privilege data Review whether endpoint telemetry is tied to who authenticated, what privilege was used, and whether the session matches expected administration.
- Search for credential exposure in operational artefacts Inspect scripts, configuration files, administrative shares, and other internal artefacts for secrets that can be reused to land on endpoints.
Bottom line: EDR visibility can be misleading when the threat uses valid credentials and legitimate administration paths rather than obvious malware or exploit chains.
Glossary terms: Endpoint Detection and Response, Credential-driven attack, Endpoint Assurance Gap, Authorised-Channel Abuse
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This topic was modified 2 days ago by NHI Mgmt Group
02/08/2026 1:18 pm
Visibility is not protection, and endpoint teams keep conflating the two. Agent coverage, signatures, and alerting status prove that telemetry exists, not that the control can stop a determined intruder. The article’s core lesson is that EDR can be operational while still blind to how attackers actually move through trusted channels. For practitioners, the governance question is whether the control measures real attack behavior or only tool health.
A question worth separating out:
Q: How should IAM and endpoint teams work together on EDR assurance?
A: They should treat credential provenance, reuse, and administrative scope as part of endpoint assurance, not a separate identity issue. IAM and PAM teams define whether access should exist, while endpoint teams test whether the control can still detect abuse when that access is used from a real host.
👉 Read our full editorial: EDR visibility is not the same as endpoint protection