Ready to supercharge your AI agents?

Install any skill in seconds. Free to start, no credit card required.

Security Hardening · ancoleman | DecimalAI

securityby ancoleman

Security Hardening

ancoleman/security-hardening

Source ancoleman/ai-design-components ↗License MIT

Reduces attack surface across OS, container, cloud, network, and database layers using CIS Benchmarks and zero-trust principles.

SkillScore100Maintained

Automatic

Security & AppSec pack

Last verified 8/21/2026

What it changes

Passed 26 of 26 test cases with the skill, and 23 of 26 without it.

Without skill88%

With skill100%

Checks it passed that the model alone missed

Classifies internal systems under Standard Priority
Classifies Seccomp and AppArmor under Layer 2 Container security
Recommends Chainguard or Distroless as the production container base image

3 fixed23 passed either way0 still failing0 broke

Pass-rate lift: +12 pp
Tokens: +194%
Agent turns: 0%
Response time: -23%

Model gemini-3.6-flashMeasured 8/21/2026v126 of 26 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/ancoleman-security-hardening/SKILL.md https://app.decimal.ai/s/ancoleman-security-hardening/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add ancoleman-security-hardening, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/ancoleman-security-hardening/ and pins it in .decimal/skills.lock

decimalai skills add ancoleman-security-hardening

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/ancoleman-security-hardening/SKILL.md https://app.decimal.ai/s/ancoleman-security-hardening/SKILL.md

Raw file: /s/ancoleman-security-hardening/SKILL.md ↗ · machine-readable summary at /s/ancoleman-security-hardening.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 3

Prompt

In a multi-layered infrastructure security architecture, at which specific layer do Seccomp profiles and AppArmor security profiles operate?

What was checked, without and with the skill
Checked	Without skill	With skill
Classifies Seccomp and AppArmor under Layer 2 Container security	Missed	Passed

case-22 · gemini-3.6-flash · 8/21/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md460 lines9 filesincludes scripts

Security Hardening

Purpose

Proactive reduction of attack surface across infrastructure layers through systematic configuration hardening, least-privilege enforcement, and automated security controls. Applies industry-standard CIS Benchmarks and zero-trust principles to operating systems, containers, cloud configurations, networks, and databases.

When to Use This Skill

Invoke this skill when:

Hardening production infrastructure before deployment
Meeting compliance requirements (SOC 2, PCI-DSS, HIPAA, FedRAMP)
Implementing zero-trust security architecture
Reducing container or cloud misconfiguration risks
Preparing for security audits or penetration tests
Automating security baseline enforcement
Responding to vulnerability scan findings

Hardening Layers

Security hardening applies across five infrastructure layers:

Layer 1: Operating System (Linux)

Kernel parameter tuning (sysctl)
SSH configuration hardening
User and group management
File system permissions and mount options
Service minimization
SELinux/AppArmor enforcement

Layer 2: Container

Minimal base images (Chainguard, Distroless, Alpine)
Non-root container execution
Read-only root filesystems
Seccomp and AppArmor profiles
Resource limits and capabilities dropping
Pod Security Standards enforcement

Layer 3: Cloud Configuration

IAM least privilege and MFA enforcement
Network security groups and NACL configuration

Track record

Benchmark

26 / 26

test cases passed, vs 23 / 26 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan14 of 15 checks clean

0 critical · 0 warning · 2 info — scanner v8 — 10/22/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

No issues (informational notes only).

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

ancoleman / ai-design-components

skills/security-hardening/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 8 files · scripts

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Security Hardening

Purpose

When to Use This Skill

Hardening Layers

Layer 1: Operating System (Linux)

Layer 2: Container

Layer 3: Cloud Configuration

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills