Agent skill

Hack23 Information Security Policy

by Hack23 in Hack23/cia

Hack23 Information Security Policy integration for SDLC — developer-facing mapping of ISP requirements to daily engineering activities, tooling, and evidence

Apache-2.0Auto-check passedSecurity

Install Hack23 Information Security Policy

skills CLI
$ npx skills add Hack23/cia --skill hack23-information-security-policy -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Hack23/cia hack23-information-security-policy --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Hack23/cia.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/hack23-information-security-policy .claude/skills/hack23-information-security-policy && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
hack23-information-security-policy
GitHub stars
239
Token cost
~3.2k tokens
SKILL.md length
1,034 words
Files
1
Skills in repo
78
Repo updated
First seen
Licence
Apache-2.0

At a glance

Hack23 Information Security Policy integration for SDLC — developer-facing mapping of ISP requirements to daily engineering activities, tooling, and evidence

  • Works in 7 steps: Read before act — load README,… → Classification awareness — never… → Minimal diff — surgical, auditable… → …
  • Security work in your project
  • SKILL.md covers Purpose, When to Use, Information Security Policy —… and Supporting Policies and When…, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Hack23 Information Security Policy is an agent skill from Hack23/cia. Hack23 Information Security Policy integration for SDLC — developer-facing mapping of ISP requirements to daily engineering activities, tooling, and evidence

Its SKILL.md is about 3.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Security. The repository describes itself as: Citizen Intelligence Agency. Open-source intelligence platform analyzing Swedish political activities using AI and data visualization. Tracks politicians, government… The licence is Apache-2.0.

When your agent uses it

  • Security work in your project

Example prompts

  • “/hack23-information-security-policy”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Read before act — load README, copilot-instructions, and the ISP before making changes
  2. Classification awareness — never escalate Public → Confidential exposure inadvertently
  3. Minimal diff — surgical, auditable changes; no unrelated refactors
  4. Evidence first — every security claim cites scanner output, ISMS control, or test
  5. Human-in-the-loop — Critical/High security changes require human approval before merge
  6. Transparent reasoning — PR descriptions link to ISP / supporting policy when relevant
  7. No secret handling — agents never print, commit, or send secrets; only reference names

What it can do on your machine

Read from SKILL.md and the folder at commit 6a9797b. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Hack23 Information Security Policy loads about 3.2k tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 1,034 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~48
When it runs · the whole SKILL.md, loaded when a task matches
~3.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Hack23/cia at commit 6a9797b, republished under its Apache-2.0 licence (© Hack23). 1,034 words, ~3,228 tokens.

Download SKILL.mdSave it as .claude/skills/hack23-information-security-policy/SKILL.md (or your agent's skills folder).
name
hack23-information-security-policy
description
Hack23 Information Security Policy integration for SDLC — developer-facing mapping of ISP requirements to daily engineering activities, tooling, and evidence
license
Apache-2.0

Hack23 Information Security Policy Integration Skill

Purpose

Translate the Hack23 Information Security Policy — the apex document of the Hack23 ISMS — into concrete, enforceable engineering behaviour for the CIA platform. This skill connects the high-level policy (CIA triad objectives, risk appetite, roles, legal duties) to the code, workflows, reviews, and evidence that actually implement it.

Where hack23-isms-compliance describes the framework and information-security-strategy describes the strategy, this skill tells an engineer or AI agent "given the ISP and its supporting policies, what must I do in this commit, PR, or design?"

When to Use

Apply this skill when:

  • ✅ Starting or reviewing any code / infrastructure / documentation change that touches data, authentication, authorization, crypto, logging, or third-party integrations
  • ✅ Creating or updating a GitHub issue or PR that is security-relevant
  • ✅ Onboarding a new contributor, AI agent, or repository to Hack23 standards
  • ✅ Responding to a CodeQL / SonarCloud / OWASP / Dependabot finding
  • ✅ Classifying data, designing an API, or integrating an external source
  • ✅ Preparing release notes, SBOM, SECURITY.md, or audit evidence
  • ✅ Assessing whether an AI coding agent action is policy-compliant

Do NOT use for:

  • ❌ Tactical incident response (use incident-response skill)
  • ❌ Deep cryptographic implementation (use crypto-best-practices / cryptography-policy)
  • ❌ Framework-level compliance mapping only (use hack23-isms-compliance)

Information Security Policy — Core Tenets (Engineering View)

The ISP is binding on all contributors, including AI agents. Its five engineering-relevant tenets are:

#ISP TenetWhat it means in code/PRsPrimary Evidence
1Confidentiality, Integrity, Availability (CIA triad)Every change must preserve or strengthen C/I/A for affected assets; no change may silently lower a classification control.THREAT_MODEL.md, SECURITY_ARCHITECTURE.md, classification labels
2Risk-based, defence-in-depthControls at code, platform, CI, infra, and monitoring layers; no single point of failure.SECURITY_ARCHITECTURE.md, Risk Register, ZAP/CodeQL scans
3Least privilege & segregation of dutiesMinimum IAM, minimum token scopes, CODEOWNERS review, permissions: block on every workflow..github/workflows/*, GitHub branch protection, IAM policies
4Transparency & accountabilitySigned commits, public security docs, SBOM, OpenSSF/CII badges, auditable logs.OpenSSF Scorecard, CII badge, SECURITY.md, SBOM
5Legal & regulatory alignmentGDPR, NIS2, EU CRA, ISO 27001:2022, NIST CSF 2.0, CIS v8.CRA-ASSESSMENT.md, ISMS_COMPLIANCE_MAPPING.md, DPIA

Supporting Policies and When Each Applies

The ISP is implemented through these supporting policies. An AI agent or developer MUST consult the ones that apply to the task at hand.

PolicyApplies WhenKey Engineering Checks
Secure Development PolicyAny code or build changeSAST+DAST+SCA pass, banned patterns, signed commits
Open Source PolicyPublic repos, OSS dep changes, releaseOpenSSF ≥7.0, CII Passing, SLSA 3, FOSSA pass, SBOM attached
Secrets Management PolicyAny credential, token, key, env varNo secrets in code, GitHub Secrets/SSM, rotation, scanning enabled
Cryptography PolicyTLS, hashing, encryption, signingTLS 1.3, AES-256-GCM, bcrypt/argon2, RSA-4096/EC P-384, KMS-managed keys
Access Control PolicyAuthN/AuthZ, Spring Security, IAMLeast privilege, MFA, role separation, deny-by-default
Data Classification / CLASSIFICATIONNew entity, API, log, exportCorrect C/I/A label, handling controls per level
Data Protection PolicyPersonal data, retention, exportGDPR lawful basis, retention, DSAR support
Privacy PolicyAny UI, log, analytics touching usersMinimal data, consent, cookies, opt-out paths
Vulnerability ManagementAny finding from scannersSLA: Crit 24h/7d, High 7d, Med 30d, Low 90d
Change ManagementReleases, schema migrations, infraCAB review, rollback plan, migration changeset
Backup & RecoveryDB or state change, DR testsRPO/RTO respected, restore tested
Incident Response PlanSuspected breach, outage, data lossTicket, classify, contain, notify ≤72h GDPR
Threat ModelingNew feature, API, trust boundarySTRIDE, attack tree, mitigation mapping
Third Party ManagementNew dependency, API, vendor, SaaSLicense OK, CVE clean, data-sharing justified
Segregation of DutiesWorkflow, deployment, review configAuthor ≠ approver, CODEOWNERS enforced
AI PolicyAny AI / Copilot / agent actionEU AI Act risk-tier, OWASP LLM, human-in-the-loop
Information Security StrategyRoadmap, architecture decisionsAligned with CEO-approved risk appetite

SDLC × ISP Responsibility Matrix

Each phase has mandatory ISP-derived checks. AI agents must confirm all items for their phase before proceeding.

┌────────────────┬──────────────────────────────────────────────────────────┐
│ SDLC Phase     │ ISP-Derived Gate                                         │
├────────────────┼──────────────────────────────────────────────────────────┤
│ Plan           │ Classification set; threat model updated; DPIA if needed │
│ Design         │ Least privilege; trust boundaries; crypto choices per    │
│                │ Cryptography Policy; third-party review                  │
│ Implement      │ Banned patterns avoided; input validation; output        │
│                │ encoding; parameterized queries; no secrets              │
│ Review         │ CODEOWNERS; SoD (author ≠ approver); PR template met    │
│ Build          │ Pinned actions; reproducible; signed; SBOM generated     │
│ Test           │ ≥80% line / ≥70% branch; CodeQL + SCA pass; DAST         │
│                │ baseline; negative test cases                            │
│ Release        │ Signed artifacts; SLSA provenance; release notes;        │
│                │ security advisories closed                               │
│ Operate        │ Logging (no PII); alerting; rotation; DR test            │
│ Respond        │ Incident plan triggers; 72h GDPR notification path       │
│ Retire         │ Secure data deletion; key destruction; dep removal       │
└────────────────┴──────────────────────────────────────────────────────────┘
Show full SKILL.md (407 more words)Show less

Non-Negotiable Rules (from ISP §Acceptable Use / §Secure Engineering)

🔴 Never:

  • Commit secrets, tokens, keys, or personal data — use GitHub Secrets / AWS SSM
  • Disable a security control (CSRF, CSP, TLS, CodeQL) without a risk-accepted PR + CEO sign-off
  • Introduce a dependency without vulnerability + license check
  • Bypass CODEOWNERS, branch protection, or the signed-commit requirement
  • Log request bodies, tokens, passwords, or classified data
  • Ship a release with open Critical or High CVEs
  • Use an unpinned GitHub Action in a workflow that has write permissions
  • Process personal data without a lawful basis documented in the DPIA

🟢 Always:

  • Classify new data (Public / Internal / Confidential / Restricted)
  • Default to deny in authorization checks
  • Parameterize all database queries
  • Encode output at the rendering boundary (Vaadin ContentMode.TEXT)
  • Use @Transactional with explicit boundaries; readOnly = true where applicable
  • Add unit tests for the negative / unauthorized path
  • Sign commits (GPG or SSH) and releases (Sigstore/cosign)
  • Record security-relevant decisions in SECURITY_ARCHITECTURE.md / THREAT_MODEL.md

AI Agent & Copilot Guardrails (ISP + AI Policy)

These rules bind every AI agent (task-agent, stack-specialist, etc.) operating in this repo:

  1. Read before act — load README, copilot-instructions, and the ISP before making changes
  2. Classification awareness — never escalate Public → Confidential exposure inadvertently
  3. Minimal diff — surgical, auditable changes; no unrelated refactors
  4. Evidence first — every security claim cites scanner output, ISMS control, or test
  5. Human-in-the-loop — Critical/High security changes require human approval before merge
  6. Transparent reasoning — PR descriptions link to ISP / supporting policy when relevant
  7. No secret handling — agents never print, commit, or send secrets; only reference names

PR Policy Compliance Checklist

Paste into PR description for any security-relevant change:

### ISP & Supporting Policy Compliance
- [ ] Change scope and classification documented
- [ ] Threat model impact assessed (STRIDE) or confirmed N/A
- [ ] Secure Development Policy checks pass (CodeQL, SonarCloud, OWASP, SpotBugs)
- [ ] Secrets Management Policy respected (no secrets, rotation considered)
- [ ] Cryptography Policy respected (approved algorithms, key storage)
- [ ] Access Control Policy respected (least privilege, deny-by-default)
- [ ] Data Protection / Privacy Policy respected (GDPR basis, retention)
- [ ] Third Party Management respected (license, CVE, attribution)
- [ ] Open Source Policy respected (SBOM, signed release, badges)
- [ ] Logging reviewed (no PII, no secrets, useful for IR)
- [ ] Negative-path tests added
- [ ] SECURITY_ARCHITECTURE.md / THREAT_MODEL.md updated if needed

Evidence & Audit Trail

Every security claim is backed by machine-verifiable evidence:

ClaimEvidence
"Least privilege in CI"permissions: block in workflow YAML
"No critical CVEs"OWASP Dependency Check report, Dependabot status
"Signed releases"Sigstore attestation, GitHub Release signatures
"Reproducible build"SLSA provenance attestation
"Coverage ≥80%"JaCoCo report in SonarCloud
"No known security hotspots"SonarCloud Security Hotspot review
"License compliant"FOSSA status badge, LICENSES/ directory
"SBOM complete"CycloneDX target/bom.json attached to release

ISMS Framework Mapping

ISP TenetISO 27001:2022NIST CSF 2.0CIS v8
CIA TriadA.5.1, A.8.2GV.RM, PR.DSCIS 3
Defence-in-depthA.8.16, A.8.26PR.IP, DE.CMCIS 4, 13
Least privilegeA.5.15, A.8.2, A.8.3PR.AC-4CIS 6
TransparencyA.5.31, A.5.37GV.OC, ID.GVCIS 17
Legal alignmentA.5.31–A.5.36GV.OC-03CIS 17.1

References

© Hack23, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .github/skills/hack23-information-security-policy of Hack23/cia.

Open the folder on GitHubat commit 6a9797b

Compare with similar skills

Hack23 Information Security Policy next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Hack23 Information Security Policy compared with similar skills
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Hack23 Information Security Policy this skillHack23/cia239—~3.2kAutomated safety check: PassApache-2.0
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Deepsec Documentation Guidevercel-labs/deepsec8.1k—~956Automated safety check: PassApache-2.0
Skill Scannergetsentry/skills1k4 repos~2.5kAutomated safety check: WarnApache-2.0
Serenity Aleabitoreddityan-labs/serenity-aleabitoreddit4791 repos~3.3kAutomated safety check: PassNone
Security Alert Triageelastic/agent-skills5921 repos~3.5kAutomated safety check: NotesApache-2.0

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Categories

Questions about Hack23 Information Security Policy

What does Hack23 Information Security Policy do?

Hack23 Information Security Policy integration for SDLC — developer-facing mapping of ISP requirements to daily engineering activities, tooling, and evidence. Hack23 Information Security Policy is an agent skill from Hack23/cia.

When should I use Hack23 Information Security Policy?

Hack23 Information Security Policy fits situations like: security work in your project.

How do I install Hack23 Information Security Policy in Claude Code?

Run `npx skills add Hack23/cia --skill hack23-information-security-policy -a claude-code`. Or copy the skill folder (.github/skills/hack23-information-security-policy in Hack23/cia) into .claude/skills/hack23-information-security-policy in your project. Claude Code loads it when a task matches its description.

How do I install Hack23 Information Security Policy in Codex?

Run `npx skills add Hack23/cia --skill hack23-information-security-policy -a codex`. Or copy the skill folder (.github/skills/hack23-information-security-policy in Hack23/cia) into .agents/skills/hack23-information-security-policy in your project. Codex loads it when a task matches its description.

Can I use Hack23 Information Security Policy in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Hack23/cia --skill hack23-information-security-policy -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hack23-information-security-policy, .gemini/skills/hack23-information-security-policy, .github/skills/hack23-information-security-policy and .opencode/skills/hack23-information-security-policy in your project.

What does Hack23 Information Security Policy need to run?

SKILL.md names no scripts, command-line tools or credentials: Hack23 Information Security Policy is instructions for the agent only.

Does Hack23 Information Security Policy access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Hack23 Information Security Policy safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Hack23 Information Security Policy use?

Hack23 Information Security Policy is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Hack23 Information Security Policy use?

About 3.2k tokens (SKILL.md is roughly 13k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Hack23 Information Security Policy?

Skills that share tags, products or a category with Hack23 Information Security Policy: Fla Ascend Performance (fla-org/flash-linear-attention, 5.8k stars), Deepsec Documentation Guide (vercel-labs/deepsec, 8.1k stars), Skill Scanner (getsentry/skills, 1k stars) and Serenity Aleabitoreddit (yan-labs/serenity-aleabitoreddit, 479 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Hack23 Information Security Policy?

Hack23 (a GitHub organization) maintains it in Hack23/cia, which has 239 GitHub stars. The repository holds 78 skills in this directory. The repository was last updated on October 6, 2026.

Source: Hack23/cia on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.