TL;DR: A 224% ROI, $3.8 million NPV, over 25% breach-risk reduction, and 2.5 hours of weekly analyst effort were modeled in Forrester Consulting’s TEI study for a 20,000-endpoint composite enterprise, according to Airlock Digital. The finding reinforces that deny-by-default application control is now as much a governance and operational discipline as an endpoint security control.
At a glance
What this is: Airlock Digital cites a Forrester Consulting TEI study that models strong financial and operational outcomes for application control on a 20,000-endpoint enterprise.
Why it matters: Endpoint teams should treat application control as both a security containment measure and an operational control because its value now gets assessed in breach reduction, coverage, and admin effort.
By the numbers:
- Forrester Consulting modeled a 224% return on investment and $3.8 million net present value for the composite organisation.
- Forrester Consulting calculated more than 25% reduction in breach risk for the composite organisation.
Context
Application control is the practice of allowing only approved software to execute on an endpoint. In enterprise environments, that control matters because malware, ransomware, and unauthorised tools often depend on getting code to run in the first place.
The article uses a Forrester Consulting TEI model to frame application control as an economic decision as well as a security one. That matters to endpoint and IAM teams because endpoint execution policy, software inventory, and privileged software changes all shape how much trust is implicitly granted inside the estate.
Key questions
Q: What breaks when application control is not enforced on endpoints?
A: Without application control, endpoints will run far more code than the organisation can reliably trust. That creates an execution path for malware, ransomware, and unwanted utilities, and it weakens inventory discipline because no one has a firm policy boundary to validate against. The result is broader attack surface, weaker containment, and more difficulty proving what software was actually permitted.
Q: Why does deny-by-default application control reduce breach risk?
A: It reduces risk because many attacks depend on getting code to execute in the first place. If the endpoint will only run approved software, the attacker must first defeat the execution policy rather than relying on a user click, an installer, or an unapproved script. That shifts the control point earlier in the attack chain and limits what can persist.
Q: What do teams get wrong about application control in modern endpoint environments?
A: A common mistake is treating application control as a blocking tool rather than an operational control that improves visibility and trust decisions. Another is trying to enforce policy too aggressively before understanding real software usage. That approach creates friction and undermines adoption. Better practice is to map actual endpoints, learn usage patterns, and phase control gradually.
Q: How should organisations judge the value of application control?
A: They should judge it on both security effect and operating cost. A useful control should reduce the set of executable software, lower the chance of malicious code running, and remain manageable for the team that owns it. If a policy cannot be operated with clear ownership and routine review, its theoretical security value will not hold up in practice.
Technical breakdown
How deny-by-default application control changes endpoint execution
Deny-by-default application control narrows the set of binaries, scripts, and installers that can execute on an endpoint. Instead of trusting broad software execution by default, the control forces a policy decision before code runs. That matters because many endpoint compromises succeed through legitimate-looking but unapproved executables, living-off-the-land tooling, or payloads delivered through user-driven execution paths. In practice, application control works best when inventory, approval workflows, and exception handling are tightly governed, otherwise the policy becomes brittle or too permissive.
Practical implication: define an explicit allow model for approved software and tie every exception to a traceable owner and expiry.
Why application control affects breach economics, not just prevention
The article frames application control as a way to reduce breach risk and administrative overhead at the same time. That is important because controls often fail commercially when they are effective but too costly to operate, or easy to operate but too weak to change attack outcomes. A deny-by-default model changes the attacker’s economics by making execution harder and more visible, while also improving software inventory discipline. For endpoint governance, the question is not whether some risk remains, but whether the control measurably compresses the execution surface.
Practical implication: evaluate controls on both prevented execution paths and ongoing operating effort, not prevention alone.
Where software inventory and user-group policy become part of security design
Application control is not only a block list. It also becomes a software inventory and policy-management discipline because the approved set has to be maintained, grouped, and adjusted over time. The article’s references to user-group customization, transparent logging, and on-demand exceptions point to the operational side of enforcement. That is where many deployments succeed or fail. If inventory is incomplete, exceptions are unmanaged, or logging is weak, the control loses both security value and audit value. For endpoint teams, governance quality is part of the technical design.
Practical implication: keep software inventory, exception handling, and logs in the same operating model as the enforcement policy.
NHI Mgmt Group analysis
Application control is now a governance control, not just an endpoint hardening feature. The article’s strongest signal is not the ROI figure itself but the shift in how buyers should value execution policy. When software execution is tightly governed, security and software inventory become linked operating disciplines. Practitioners should treat the allow model as part of identity-adjacent access control for code.
Deny-by-default changes the attack surface by constraining what can run, not merely what can be detected. That distinction matters because detection assumes the malicious payload executes first, while application control aims to stop the execution path altogether. For endpoint programmes, this makes policy completeness, exception governance, and logging the real control question. Practitioners should measure whether the policy is reducing runnable code paths, not just generating alerts.
Application control economics exposes a recurring mistake in endpoint programmes: they assess friction without assessing prevented execution. A control that is operationally expensive but weak is not a viable governance choice, but neither is one that is easy yet ineffective. The Forrester model cited by Airlock Digital shows why economics and control strength have to be evaluated together. Practitioners should use that lens when justifying endpoint policy changes to security and IT leaders.
Software inventory discipline is the hidden dependency behind effective execution control. Allowlisting fails when teams cannot reliably know what software is approved, who needs it, and when exceptions expire. That makes inventory, ownership, and exception lifecycle management part of the control, not support tasks. Practitioners should align endpoint policy with software governance so that trust decisions remain current and auditable.
What this signals
Application execution policy is becoming a board-level control question, not just an endpoint implementation detail. The reason is simple: if organisations cannot govern what runs, they cannot consistently govern what executes under trusted conditions. For endpoint programmes, that means allowlisting should be measured alongside inventory accuracy, exception ageing, and business ownership of approved software.
Deny-by-default only works when exception governance is disciplined. Temporary access paths have a habit of becoming permanent trust if no one owns expiry, review, and revocation. Practitioners should expect pressure to weaken the policy over time and design operating controls that resist that drift.
Application control sits close to the identity boundary because software execution is a privilege decision. When the endpoint is allowed to run only trusted code, the control behaves like a runtime authorisation layer for code. Teams should connect endpoint policy to broader access governance so execution trust, software ownership, and auditability stay aligned.
For practitioners
- Define an approved software execution baseline Build a deny-by-default policy from a verified inventory of business-approved binaries, scripts, and installers, then map exceptions to named owners and expiry dates.
- Tie exceptions to operational ownership Require every application control exception to include a business justification, review date, and rollback path so temporary access does not become permanent trust.
- Measure execution-policy coverage separately from alert volume Track how much of the endpoint estate is governed by the allow model, how many unapproved execution attempts are blocked, and how long exceptions stay open.
- Use software inventory as a security control input Keep inventory, packaging, and deployment data current so the allowlist reflects what is actually deployed rather than what was once approved.
Key takeaways
- Application control reduces risk by constraining what code can execute, which changes the attacker’s path before malware or ransomware can take hold.
- The article frames the control as an operational and financial decision as well as a security one, with low ongoing analyst effort mattering as much as prevention.
- Endpoint teams should govern allowlists, exceptions, and inventory together, because weak lifecycle management can undo the security value of deny-by-default policy.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
MITRE ATT&CK addresses the attack and risk surface, while CIS Controls v8 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | CIS-5 — Account Management | Application control depends on governed ownership of approved software and exceptions. |
| Recommendation — Apply CIS-5 discipline to keep software ownership and exception handling current and auditable. | ||
| NIST CSF 2.0 | PR.PS-01 — Configuration Management | Deny-by-default execution policy is part of secure platform configuration on endpoints. |
| Recommendation — Use PR.PS-01 to govern endpoint application control as a baseline configuration requirement. | ||
| MITRE ATT&CK | TA0002;TA0040 — Execution; Impact | The article is about preventing malicious code execution and limiting resulting impact. |
| Recommendation — Map application control gaps to execution and impact techniques to prioritise blocked code paths. | ||
Key terms
- Application control: Application control is the enforcement of which software may run on a device and under what conditions. It is a key governance layer because unauthorized or unsafe code can undermine access assurance even when authentication and device enrolment are in place.
- Deny By Default: Deny by default is an authorization rule that blocks access unless a policy explicitly permits it. It is the safer baseline for modern identity control because it limits accidental privilege expansion and makes every access grant visible, testable, and easier to review.
- Allowlisting: Allowlisting restricts execution to a defined set of approved commands, arguments, or values. It is stronger than blocking known-bad input because it focuses on what the application should accept, which is essential when a workflow must invoke system commands.
- Software inventory: A current, authoritative record of the applications, versions, and dependencies running across an organisation. It is the baseline control for lifecycle management because teams cannot retire, patch, or isolate what they cannot reliably see.
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Published by the NHIMG editorial team on September 6, 2026.
Updated on October 11, 2026.
NHI Mgmt Group, the independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org