---
name: security-scanning-22f3dce2010a
description: "Use when checking code for vulnerabilities, linting shell scripts, scanning containers or IaC for security issues, or managing encrypted secrets"
allowed-tools: [Bash(trivy*), Bash(shellcheck*), Bash(sops*), Read, Glob]
version: 1.0.0
author: ykotik
license: MIT
---

# Security Scanning

## When to Use
- Scanning a project directory for known vulnerabilities (CVEs)
- Scanning a container image before deployment
- Scanning Infrastructure-as-Code (Terraform, CloudFormation) for misconfigurations
- Linting shell scripts for bugs, pitfalls, and unsafe patterns
- Encrypting or decrypting secrets stored in YAML/JSON config files
- Checking dependencies for known security issues

## Tools

| Tool | Purpose | Structured output |
|------|---------|-------------------|
| **Trivy** | Vulnerability scanner for filesystems, containers, IaC | `--format json` or `--format sarif` |
| **ShellCheck** | Static analysis and linting for shell scripts | `-f json` for JSON output |
| **sops** | Encrypt/decrypt secrets in YAML, JSON, ENV files | Outputs decrypted file to stdout |

## Patterns

### Scan project directory for vulnerabilities
```bash
trivy fs --format json --output results.json .
```

### Scan project and show results in terminal
```bash
trivy fs --severity HIGH,CRITICAL .
```

### Scan a container image
```bash
trivy image --format json --output scan.json nginx:latest
```

### Scan Terraform files for misconfigurations
```bash
trivy config --format json .
```

### Scan a lockfile (package-lock.json, requirements.txt, etc.)
```bash
trivy fs --scanners vuln --format json package-lock.json
```

### Generate SARIF report for CI integration
```bash
trivy fs --format sarif --output report.sarif .
```

### Lint a shell script with JSON output
```bash
shellcheck -f json script.sh
```

### Lint all shell scripts in a directory
```bash
shellcheck -f json *.sh scripts/*.sh
```

### Lint with specific severity threshold
```bash
shellcheck -S warning -f json script.sh
```

### Encrypt a secrets file with sops (using age key)
```bash
sops --encrypt --age $(cat ~/.config/sops/age/keys.txt | grep "public key:" | awk '{print $NF}') secrets.yaml > secrets.enc.yaml
```

### Decrypt a secrets file to stdout
```bash
sops --decrypt secrets.enc.yaml
```

### Edit encrypted file in-place
```bash
sops secrets.enc.yaml
```

### Decrypt a single value
```bash
sops --decrypt --extract '["database"]["password"]' secrets.enc.yaml
```

## Pipelines

### Scan and summarize critical findings
```bash
trivy fs --format json . | jq '[.Results[] | .Vulnerabilities[]? | select(.Severity == "CRITICAL") | {id: .VulnerabilityID, pkg: .PkgName, title: .Title}]'
```
Each stage: Trivy scans and outputs JSON, jq filters to critical vulnerabilities and extracts key fields.

### Lint all shell scripts and count issues by severity
```bash
shellcheck -f json scripts/*.sh | jq 'group_by(.level) | map({level: .[0].level, count: length})'
```
Each stage: ShellCheck lints all scripts to JSON, jq groups and counts by severity level.

### Scan image and fail if critical vulns found
```bash
trivy image --format json myapp:latest | jq -e '[.Results[] | .Vulnerabilities[]? | select(.Severity == "CRITICAL")] | length == 0'
```
Each stage: Trivy scans image, jq checks for critical vulns and exits non-zero if any found.

## Prefer Over
- Prefer **Trivy** over manual `npm audit` / `pip audit` — scans all ecosystems in one pass
- Prefer **ShellCheck** over manual review for shell scripts — catches subtle quoting, globbing, and portability bugs
- Prefer **sops** over storing plaintext secrets — encryption at rest with version control compatibility

## Do NOT Use When
- Reviewing business logic or application design flaws — these tools find known CVEs and script bugs, not logic errors
- Linting Python code — use Ruff (python-tooling skill) instead
- Linting JavaScript/TypeScript — use ESLint or Biome directly
- Managing runtime secrets (use Vault or environment variables for that)


---
Source attribution: jeremylongshore
Original project: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/ab85a061f7bcc039dac13ee193de7a4cd4388571/plugins/productivity/cli-power-skills/skills/security-scanning/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 Yuriy Kotik

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: jeremylongshore
Original project: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/ab85a061f7bcc039dac13ee193de7a4cd4388571/plugins/productivity/cli-power-skills/skills/security-scanning/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering
Roles: Backend Developer, DevOps / SRE, Security Engineer
Specialties: API, Backend, Database, Design, DevOps, Word Documents, Frontend, Git, Testing
Tools: Shellcheck, Sops, Trivy
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: d67e90bd4817a1c9ea032a9866c3d4ea2df0db4c28d0bc5bcd451fb6cc756fb5