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Enterprise Security Readiness Calculator

Score enterprise readiness across identity, endpoint, network, cloud, data, detection, response, governance and resilience.

About Enterprise Security Readiness Calculator

Domain weights follow where incidents actually originate, which is why identity carries the most and third-party the least in direct control terms. The weak-link penalty exists because attackers choose the weakest domain rather than the average: an estate that is excellent everywhere except unmanaged cloud accounts is not a high-readiness estate. The result is a prioritisation estimate to sequence investment, not an audit conclusion or a certification. Balance beats peaks — an even 70 across ten domains is materially harder to attack than a set of 90s with one 35.

Formula

Enterprise Security Readiness

readiness = Σ(domainScore × weight) − weakLinkPenalty, with identity at 16%, endpoint and detection at 13%, cloud and response at 11%, network and data at 10%, governance and vulnerability management at 6%, third party at 4%.

domainScore
Self-assessed or audited capability score out of 100
weakLinkPenalty
Up to 9 points deducted where any domain sits below 60
balanceIndex
100 minus the spread between the strongest and weakest domain

Worked example

With the default values below, Enterprise Security Readiness Calculator returns Enterprise Readiness Score of 62.6. Change any input above and every figure here is recalculated in your browser.

Inputs used

Identity and access managementaccepts 0–100 / 100
70 / 100
Endpoint protection and hardeningaccepts 0–100 / 100
75 / 100
Network security and segmentationaccepts 0–100 / 100
60 / 100
Cloud security postureaccepts 0–100 / 100
65 / 100
Data protection and classificationaccepts 0–100 / 100
55 / 100
Detection and monitoringaccepts 0–100 / 100
68 / 100
Incident response and recoveryaccepts 0–100 / 100
62 / 100
Governance, risk and complianceaccepts 0–100 / 100
72 / 100
Vulnerability and patch managementaccepts 0–100 / 100
58 / 100
Third-party and supply chainaccepts 0–100 / 100
45 / 100

Results

Enterprise Readiness Score
62.6 / 100
Readiness Rating
C — Fair
Maturity Level
Level 3 — Defined
Weakest Domain
Third-party and supply chain
Domains Below 60
3 domains
Balance Across Domains
70.0 / 100
Priority Investment
Raise Third-party and supply chain first — the weakest domain caps what every other investment achieves

Step by step

  1. 1Values used
  2. 2Enterprise Security Readiness
  3. 3Enterprise Readiness Score= 62.6 / 100
  4. 4Readiness Rating= C — Fair
  5. 5Maturity Level= Level 3 — Defined
  6. 6Weakest Domain= Third-party and supply chain
  7. 7Domains Below 60= 3 domains
  8. 8Balance Across Domains= 70.0 / 100

Assumptions and limits

  • The result is derived only from the 10 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Enterprise Security Readiness calculated?

readiness = Σ(domainScore × weight) − weakLinkPenalty, with identity at 16%, endpoint and detection at 13%, cloud and response at 11%, network and data at 10%, governance and vulnerability management at 6%, third party at 4%. Domain weights follow where incidents actually originate, which is why identity carries the most and third-party the least in direct control terms. The weak-link penalty exists because attackers choose the weakest domain rather than the average: an estate that is excellent everywhere except unmanaged cloud accounts is not a high-readiness estate. The result is a prioritisation estimate to sequence investment, not an audit conclusion or a certification.

Why does Enterprise Security Readiness matter?

Balance beats peaks — an even 70 across ten domains is materially harder to attack than a set of 90s with one 35.

What values do I need to enter?

This calculator takes 10 inputs: Identity and access management, Endpoint protection and hardening, Network security and segmentation, Cloud security posture, Data protection and classification, Detection and monitoring, Incident response and recovery, Governance, risk and compliance, Vulnerability and patch management, Third-party and supply chain. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

Are self-assessed domain scores meaningful?

Only if they are evidenced. Anchor each score to something observable — coverage percentages, tested playbooks, audit findings — otherwise the exercise measures optimism. Independent validation on the two or three weakest domains is the usual compromise.

Why is governance weighted low?

Because it enables rather than prevents. Good governance makes the technical domains improve faster and stay improved, but no policy has ever blocked an exploit — so it earns weight for sustainment, not for defence.

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