TL;DR: Universal Zero Trust Network Access programs generate plenty of operational data, but uptime, logs and alert volume do not prove risk is falling, according to Forescout; the board needs quarterly KPIs tied to exposure, containment, governance and financial impact. Activity is not assurance, and zero trust only becomes credible when it can show narrower access, faster containment and shrinking control debt.
Editorial analysis by NHI Mgmt Group, based on content published by Forescout: “Zero Trust KPIs Your Board Actually Needs to See”.
Key questions
Q: How can security teams tell whether Zero Trust is actually reducing business risk?
A: They should look for shrinking attack paths, lower lateral movement opportunity, faster containment, and better uptime during incidents.
Q: Why can VPN migration fail to reduce attack surface?
A: VPN migration can fail to reduce attack surface when the new design keeps broad network reach, long-lived credentials and implicit trust for remote users or workloads.
Q: How does session revocation support zero trust enforcement?
A: Session revocation supports zero trust enforcement by cutting off access immediately after a risk signal, policy change or identity event, rather than waiting for a token or login to expire.
Practitioner guidance
- Define board KPIs by exposure, containment and governance Replace activity metrics with a small quarterly set that measures what remains reachable, how fast access is terminated and how exceptions age.
- Track remaining VPN-dependent access paths Report the specific applications and use cases still relying on network-level VPN access, along with the reason each one has not migrated.
- Measure session revocation under realistic conditions Test stolen-credential and posture-downgrade scenarios so you can verify that active sessions end inside the response window you claim.
Bottom line: Zero trust reporting becomes misleading when it treats operational activity as proof of reduced compromise risk.
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Boards should stop treating zero trust reporting as a telemetry exercise. A program can look healthy while broad access, slow containment and unmanaged exceptions still preserve the breach path. The governance mistake is to confuse control activity with control effect. Practitioners need evidence that access is narrower, movement is harder and risky sessions are shorter lived.
A few things that frame the scale:
- By 2029, 40% of enterprises that successfully implement zero trust within cloud service provider environments will rely on the advanced visibility and control capabilities offered by CNAPP solutions.
A question worth separating out:
Q: What is the best way to report policy exceptions to the board?
A: The best way is to report policy exceptions as a formal register of control debt, grouped by business owner, risk level, expiry date and compensating control. The board needs the trend, concentration of high-risk exceptions and overdue items, not case-by-case technical detail. That format turns exceptions into governance data for decision-making and remediation funding.
👉 Read our full editorial: Board metrics for zero trust should measure risk reduction