Secure Code Reviewer
Identify security vulnerabilities in code changes before production deployment
What You Can Do
This skill reviews code changes with security-focused analysis, flagging injection attacks (SQL, command, template), hardcoded secrets, improper error handling, weak cryptography, and access control issues. It provides context-aware risk assessment, severity ratings, and actionable remediation strategies—complementing automated tools with human-level reasoning about business impact and secure coding patterns.
Features
Identifies SQL injection, command injection, template injection, and expression language injection vulnerabilities
Flags hardcoded credentials, unencrypted sensitive data, excessive logging, and PII handling violations
Detects weak algorithms, improper key management, timing attack risks, and unsafe random number generation
Reviews privilege escalation risks, broken access control, session management flaws, and token handling
Catches stack trace leakage, information disclosure through error messages, and improper exception handling
Identifies unsafe deserialization, dynamic code execution, and eval() usage risks
Ranks findings by severity, exploitability, and business impact with clear remediation guidance
Maps issues to OWASP Top 10, CWE, and relevant security standards
Example Output
Example 1: SQL Injection Detection
- ⚠️ HIGH SEVERITY - SQL Injection Risk
Line 42: SELECT * FROM users WHERE id = ' + userId + '
Risk: User input directly concatenated into SQL query
Remediation: Use parameterized queries or prepared statements
Example: connection.query('SELECT * FROM users WHERE id = ?', [userId])
Example 2: Hardcoded Secret Detection
- 🔴 CRITICAL - Exposed Credentials
Line 15: const apiKey = 'sk-1234567890abcdef'
Risk: API key stored in source code, visible in git history
Remediation: Move to environment variables or secrets manager
Example: const apiKey = process.env.API_KEY
Example 3: Weak Cryptography
- ⚠️ MEDIUM SEVERITY - Cryptographic Weakness
Line 87: const hash = md5(password)
Risk: MD5 is cryptographically broken for password hashing
Remediation: Use bcrypt, Argon2, or scrypt for password storage
What's Included
- secure-code-reviewer.md: Core instruction file with threat modeling framework and vulnerability taxonomy
- Security Checklist: OWASP Top 10 mapping and common vulnerability patterns by language
- Risk Assessment Template: Severity scoring matrix and business impact evaluation guide
- Remediation Reference: Secure coding examples for common vulnerabilities (SQL, injection, auth, crypto)
- Code Review Workflow: Step-by-step process for reviewing diffs, PRs, and components
Who It's For
- Security Engineers — Conducting code reviews and vulnerability assessments
- Software Developers — Learning secure coding practices and self-reviewing work
- DevSecOps Engineers — Integrating security checkpoints into CI/CD pipelines
- Technical Leads — Establishing code security standards for teams
- Compliance Officers — Ensuring adherence to security standards (OWASP, CWE, GDPR)
Best For
- Pull request and merge request security reviews before deployment
- Analyzing code changes in authentication, authorization, and data handling
- Evaluating third-party library integrations for security risks
- Security-focused code audits of critical or sensitive components
- Developer training and secure coding pattern education
- Post-incident analysis of reported security vulnerabilities
You might also like
You get Claude to analyze your API specifications and automatically generate bulletproof parameter validation logic. Claude creates security-hardened middleware, enforces type constraints, detects malicious input patterns, and generates comprehensive error handling — all tailored to your framework and existing codebase. The result is production-ready validation code with zero unvalidated inputs reaching your business logic.
This skill enables you to automatically audit your websites against compliance standards and detect deviations from expected baselines. You can track regulatory requirements, identify policy violations, and generate compliance reports with actionable remediation steps. Monitor multiple sites simultaneously and maintain detailed audit trails for compliance documentation.
Transform schema and data changes into production-ready migration packages that protect data integrity and minimize downtime. You can handle column additions, renames, type conversions, and backfills using proven patterns like expand-contract and shadow tables. The skill generates explicit rollback scripts, validation checklists, and phased execution plans that keep applications stable throughout the migration.
You'll transform high-level feature requirements into a complete development plan covering API design, frontend implementation, testing strategy, and documentation. The skill helps you identify dependencies, parallelize work across frontend and backend teams, and establish quality gates that ensure features ship bug-free with proper error handling and logging.
You can conduct comprehensive toxicology safety assessments, generate regulatory-compliant safety documentation, and produce detailed hazard analyses for pharmaceutical and chemical submissions. This skill structures toxicological data into standardized safety reports, maps findings to regulatory guidelines (FDA, EMA, ICH), and identifies risk characterization strategies to support regulatory submissions and approval timelines.
You can submit your Solidity smart contracts for comprehensive security analysis, vulnerability detection, and gas optimization recommendations. Claude reviews your code against known attack vectors, design patterns, and best practices—identifying reentrancy risks, overflow/underflow issues, access control flaws, and inefficient operations. You receive actionable fix recommendations with explanations of the security implications and gas savings potential.
You can design end-to-end NGS pipelines tailored to your experiment type (WGS, WES, RNA-seq, targeted), troubleshoot pipeline failures by analyzing QC metrics and logs, and optimize performance by fine-tuning parameters and identifying bottlenecks. This skill handles the full workflow from raw sequencing data quality assessment through variant interpretation and annotation.
You can accelerate your entire antenna design workflow—from initial concept to optimized specifications—by leveraging Claude's knowledge of electromagnetic theory, antenna types, and design trade-offs. Claude helps you parameterize designs, identify optimal configurations for your frequency band and application, and prepare detailed briefs for simulation and manufacturing. You'll generate design reviews, impedance-matching solutions, and validation checklists without context-switching to multiple tools.