What should organisations prioritise before asking for more EDR coverage?

They should prioritise reducing identity blast radius. If overprivileged users and machine identities can reach too many assets, EDR will still see the activity after the fact. Segment the environment, remove excess permissions, and make privileged access conditional so the attacker cannot turn one login into full movement.

Why This Matters for Security Teams

More EDR coverage does not fix excessive reach. If users, service accounts, API keys, and machine identities can already move across too many systems, endpoint telemetry only confirms that lateral movement happened. The real control point is identity blast radius: who and what can authenticate, what they can reach, and whether access is still justified at the moment it is used. The NHI Mgmt Group’s Ultimate Guide to NHIs notes that 97% of NHIs carry excessive privileges, which is why endpoint tools alone rarely stop post-login abuse.

This matters because attackers do not need a new foothold if the first foothold already has broad trust. When identity permissions are wide open, detection becomes reactive instead of preventive, and incident response starts after movement has already spread. The NIST Cybersecurity Framework 2.0 reinforces that access control and continuous governance are core security functions, not optional add-ons. In practice, many security teams discover identity sprawl only after an endpoint alert reveals a much larger access problem than the alert itself.

How It Works in Practice

Prioritising identity blast-radius reduction means shrinking the number of paths an attacker can take after any single credential, token, or session is compromised. That starts with mapping who has access to what, then removing standing privilege that is not required for daily operations. For human access, this usually means stronger role design, tighter segmentation, and conditional privileged access. For NHIs, it means short-lived secrets, scoped permissions, and lifecycle controls that revoke access when the workload no longer needs it.

Practitioners should focus on controls that change the access model, not just the detection model:

• Break broad network trust into smaller zones so one compromised identity cannot traverse the environment freely.
• Replace standing admin rights with just-in-time elevation and expiry-based access.
• Reduce long-lived secrets and rotate credentials that still exist in code, pipelines, or configuration.
• Review service account, API key, and automation permissions as aggressively as human accounts.
• Use workload identity and policy enforcement so access is evaluated at request time, not assumed from yesterday’s approval.

The operational logic is simple: EDR is better at seeing suspicious behaviour, while identity hardening is better at preventing the behaviour from becoming widespread. NHI Mgmt Group’s Ultimate Guide to NHIs also highlights that only 5.7% of organisations have full visibility into service accounts, which means many teams cannot even measure how far a compromised identity can go. Implementation guidance from the NIST Cybersecurity Framework 2.0 supports this by treating identity governance as a foundational risk-reduction activity. These controls tend to break down in flat networks with shared admin credentials and loosely managed automation, because one compromise can still inherit enterprise-wide reach.

Common Variations and Edge Cases

Tighter identity control often increases operational overhead, requiring organisations to balance security gains against deployment friction and legacy compatibility. That tradeoff is especially visible in environments with old applications, shared service accounts, or brittle pipelines where teams fear that least privilege will break production. Current guidance suggests phasing the change rather than forcing a big-bang redesign: start with the most exposed identities, the most privileged accounts, and the most critical network paths.

There is no universal standard for this yet, but best practice is evolving around three patterns. First, protect privileged human access with conditional elevation instead of permanent admin rights. Second, treat machine identities as first-class identities with their own ownership, scope, and rotation rules. Third, use segmentation and policy enforcement to make access context-dependent, especially where a token may be valid but the current request is no longer appropriate. The NHI Mgmt Group’s Ultimate Guide to NHIs is useful here because it ties excessive privilege, secret sprawl, and rotation gaps to the same underlying problem: too much standing trust. The practical exception is highly regulated or safety-critical systems where access changes must be staged carefully, because uptime requirements can delay aggressive privilege reduction.

Related resources from NHI Mgmt Group

• When should organisations prioritise Zero Standing Privilege for non-human identities?
• Should organisations prioritise MFA or compromised-credential screening first?
• When should organisations prioritise Zero Trust for OT over perimeter upgrades?
• How can organisations reduce secret leakage in ServiceNow at scale?