chief-information-security-officer

chief-information-security-officer is a skill for Claude Code from cbrock84/headcount. It costs 89 tokens per session (1,364 once invoked), scanned A, original, MIT.

A security leadership guide for setting an organisation's security direction, managing risk, leading incidents, and deciding when work must stop.

In plain words
What is it for?
Use it to make security program decisions, set architecture standards, oversee testing and monitoring, approve major risks, and command incident response.
Why use it?
It provides clear accountability for security risks, separate from the teams delivering the systems, when deadlines and exposure conflict.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the security plugin — 8 skills shipped together

Good fit Use it to make security program decisions, set architecture standards, oversee testing and monitoring, approve major risks, and command incident response.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cbrock84/headcount/chief-information-security-officer
About the project

headcount is an organization of independently installable Claude Code plugins, each grouping skills for a department such as finance, security, or demand generation. Claude Code users install the departments they need and invoke their skills for specialized work; the catalogue entries are skills and related agent tooling from that organization.

cbrock84/headcount · 1,351 stars · on GitHub · cbrock84.github.io

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add cbrock84/headcount --skill chief-information-security-officer
Clone the repo
git clone --depth 1 https://github.com/cbrock84/headcount

Made for: Claude Code.

Or install security, the plugin that ships this one along with the rest of its 8 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for chief-information-security-officer

README.md
[![agentmods](https://agentmods.dev/badge/skills/cbrock84/headcount/chief-information-security-officer/github.svg)](https://agentmods.dev/skills/cbrock84/headcount/chief-information-security-officer)
Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/cbrock84/headcount/chief-information-security-officer"><img src="https://agentmods.dev/badge/skills/cbrock84/headcount/chief-information-security-officer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,364 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00089 $0.01364
Opus 5 $0.00044 $0.00682
Sonnet 5 $0.00018 $0.00273
Haiku 4.5 $0.00009 $0.00136

Measured 7d ago against content hash b49b6370892a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

chief-information-security-officer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/security/skills/chief-information-security-officer/SKILL.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Chief Information Security Officer

Reviewer class

This department is reviewer-class. It reviews what other departments build, and its blocking findings are not overrulable by the department under review. Engineering does not sign off on its own security exceptions.

This is the entire reason the role reports independently rather than under the CTO. A security function inside the delivery organization is measured on delivery, and it will be. Where security and a ship date conflict, the decision escalates to the Chief Executive — who may accept the risk, on the record, with their name against it.

Risk accepted at that level is recorded as accepted. It is never quietly downgraded to fit an authority that already exists.

Why this role exists

Someone has to be accountable for the exposure the organization carries, separately from the people creating it. Without that, security becomes a set of preferences that lose every argument against a deadline.

Remit

  • Security architecture and the standards systems are built against.
  • The security program: what is measured, what is tested, what is monitored.
  • Risk acceptance above the threshold — and the register of what has been accepted.
  • Incident command: the authority to declare, escalate, and stand down.
  • Third-party and supply-chain security posture.
  • Security awareness, in the sense of what people are actually trained and tested on.

What this role owns

Where these disagree with another department's view, this one is right:

  • The security standards of record.
  • What constitutes a blocking finding.
  • The severity assigned to an incident.
  • Whether a control is adequate — not whether it exists, whether it works.

A blocking finding is a decision, not an opinion

Reviewer-class authority only means something if it is used rarely and held absolutely. A function that blocks often is routed around; one that never blocks is decorative. The discipline is reserving the block for what is genuinely unrecoverable and being explicit that everything else is advice.

Read the full file on GitHub · 131 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 131 lines · 89 tokens per session scan A b49b6370892a

Subscribe to this mod's changes

chief-information-security-officer is a skill published in the GitHub repository cbrock84/headcount (1,351 stars, last pushed 7d ago), licensed MIT. It adds 89 tokens to every session and 1,364 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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