Updated 3d ago
by briiirussell
cybersecurity-skills
Cybersecurity skills for AI coding agents (Claude Code, Cursor, Codex)
501 GitHub stars (501)
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- 30 skills (30 skills found in its SKILL.md files)
- 62 forks (62 forks)
- 3d ago last update (Last updated 3d ago)
Install
Skills CLI
npx skills add briiirussell/cybersecurity-skills
Asks which skills and agents to install. Just one: npx skills add briiirussell/cybersecurity-skills --skill agent-supply-chain-audit — add -g for every project.
Claude Code
git clone https://github.com/briiirussell/cybersecurity-skillscp -r "cybersecurity-skills/skills/agent-supply-chain-audit" ~/.claude/skills/
Copies the agent-supply-chain-audit skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.
Plugin
/plugin marketplace add briiirussell/cybersecurity-skills
Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.
Skills can run code on your machine — read the SKILL.md first.
What it does
In the author's own words, from each skill's SKILL.md — showing the first 30 of 42 files.
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agent-supply-chain-audit
Audit the extensions AI coding agents load and trust (skills, plugins, marketplaces, hooks, settings, MCP servers, and instruction files like CLAUDE.md, AGENTS.md, GEMINI.md, .cursor/rules and copilot-instructions.md) across Claude Code, Cursor, Codex, Gemini CLI and GitHub Copilot. Read-only: inventories each item with its source and pin, greps for hidden instructions, exfiltration, credential r…
skills/agent-supply-chain-audit/ on GitHub (opens in a new tab)SKILL.md -
ai-risk-management
Apply the NIST AI Risk Management Framework (AI RMF 1.0) and adjacent guidance to AI / ML systems — model lifecycle governance, fairness and bias evaluation, robustness, transparency, accountability, third-party model risk, monitoring for drift, and AI incident response. Broader than prompt-injection (which is the security slice). Use when the user mentions 'AI risk,' 'AI governance,' 'NIST AI RM…
skills/ai-risk-management/ on GitHub (opens in a new tab)SKILL.md -
api-audit
Audit REST, GraphQL, and RPC APIs against the OWASP API Security Top 10 (2023). Use when the user mentions 'API security,' 'API audit,' 'BOLA,' 'broken object level authorization,' 'BFLA,' 'function-level authorization,' 'mass assignment,' 'API rate limiting,' 'GraphQL security,' 'REST security,' 'API authentication,' 'API authorization,' 'excessive data exposure,' or needs to review API endpoint…
skills/api-audit/ on GitHub (opens in a new tab)SKILL.md -
breach-patterns
Learn from public breach disclosures — extract the audit question each one implies and check your own stack. Capital One IMDS abuse, LastPass vault exfiltration, Okta Lapsus$, Snowflake credential reuse, MOVEit, SolarWinds, Equifax, Target POS, Codecov, Uber, Twilio — what would you check now if your boss said 'could that happen to us?' Use when the user mentions 'breach analysis,' 'lessons learn…
skills/breach-patterns/ on GitHub (opens in a new tab)SKILL.md -
business-logic-testing
Test an authorized web application for business-logic flaws and race conditions — the classes scanners cannot find. Model invariants (conservation of value, uniqueness, monotonicity, exclusivity), build an Actor x Action x Resource matrix, abuse state machines (skip/reorder/replay steps, limit-slicing), find numeric bugs (float-vs-decimal rounding, cross-currency refund arbitrage, negative amount…
skills/business-logic-testing/ on GitHub (opens in a new tab)SKILL.md -
cicd-security
Audit CI/CD pipelines, GitHub Actions first and GitLab CI and CircleCI briefly, for the paths that give an outsider code execution, secrets or a write token: pull_request_target and workflow_run running untrusted code, expression injection into run steps, missing or broad workflow permissions, third-party actions not pinned to a commit SHA, OIDC trust policies with wildcard subjects, self-hosted…
skills/cicd-security/ on GitHub (opens in a new tab)SKILL.md -
cloud-audit
Audit cloud infrastructure (AWS, GCP, Azure) and PaaS deployment platforms (Vercel, Netlify, Heroku, Render, Railway, Fly) for misconfigurations, excessive permissions, stale or manual production deploys, and security gaps. Use when the user mentions 'cloud security,' 'cloud audit,' 'AWS security,' 'GCP security,' 'Azure security,' 'IAM audit,' 'S3 bucket,' 'cloud misconfiguration,' 'cloud harden…
skills/cloud-audit/ on GitHub (opens in a new tab)SKILL.md -
container-audit
Audit container images, Dockerfiles, and Kubernetes manifests for misconfigurations, excessive privileges, exposed secrets, and runtime risks. Use when the user mentions 'container security,' 'Docker security,' 'Dockerfile audit,' 'Kubernetes security,' 'K8s security,' 'pod security,' 'container hardening,' 'kubectl audit,' 'image scanning,' 'distroless,' 'rootless containers,' 'pod security poli…
skills/container-audit/ on GitHub (opens in a new tab)SKILL.md -
control-audit
Control-level audit readiness for SOC 2, ISO/IEC 27001:2022 and NIST SP 800-53 Rev. 5 / FedRAMP. Scope the audit (criteria or baseline, systems, period, Type 1 vs Type 2), build the control inventory, write an evidence request per control (artifact, owner, sample, test method), test what the repo and configs show (CC8.1 / A.8.32 / CM-3 change management via branch protection), hand technical chec…
skills/control-audit/ on GitHub (opens in a new tab)SKILL.md -
crypto-audit
Audit cryptography implementation — algorithm choice, key sizes, KDF parameters, IV/nonce handling, signature verification, randomness, TLS configuration, and key rotation. Deeper than owasp-audit A04. Use when the user mentions 'crypto review,' 'cryptography audit,' 'encryption review,' 'KDF,' 'PBKDF2,' 'Argon2,' 'bcrypt cost,' 'IV reuse,' 'nonce reuse,' 'AES mode,' 'AES-GCM,' 'AES-ECB,' 'signat…
skills/crypto-audit/ on GitHub (opens in a new tab)SKILL.md -
csf-mapping
Map your security posture against the NIST Cybersecurity Framework 2.0 (Govern, Identify, Protect, Detect, Respond, Recover). Produce a gap analysis, current/target tier assessment, and roadmap in the governance language that boards, auditors, and CISOs actually use. Use when the user mentions 'NIST CSF,' 'CSF 2.0,' 'cybersecurity framework,' 'security posture,' 'governance mapping,' 'CSF gap ana…
skills/csf-mapping/ on GitHub (opens in a new tab)SKILL.md -
dependency-audit
Audit project dependencies, frameworks, languages, and dev tools for known vulnerabilities, CVEs, and security anti-patterns. Use when the user mentions 'dependency audit,' 'npm audit,' 'CVE,' 'vulnerable packages,' 'supply chain security,' 'outdated dependencies,' 'known vulnerabilities,' 'security advisory,' 'package security,' 'framework vulnerability,' 'is this package safe,' 'pnpm audit,' 'y…
skills/dependency-audit/ on GitHub (opens in a new tab)SKILL.md -
disk-forensics
Analyze disk images, file systems, and memory captures for digital evidence recovery in forensic investigations and CTF challenges. Use when the user mentions 'disk forensics,' 'forensic analysis,' 'disk image,' 'file carving,' 'deleted files,' 'evidence recovery,' 'timeline analysis,' 'memory forensics,' 'volatility,' 'autopsy,' 'sleuthkit,' 'plaso,' 'log2timeline,' 'artifact analysis,' 'chain o…
skills/disk-forensics/ on GitHub (opens in a new tab)SKILL.md -
finding-triage
Triage a single security finding — from a scanner, audit, advisory, report, or a findings.json record — to a defensible disposition with calibrated severity, a mitigation plan, false-positive justification, or accepted-risk writeup. Use when the user mentions 'triage this finding,' 'is this a real vulnerability,' 'mitigation plan,' 'false positive,' 'accept this risk,' 'compensating controls,' 'r…
skills/finding-triage/ on GitHub (opens in a new tab)SKILL.md -
fuzzing-harness
Write and run a fuzzer, fuzz harnesses and property-based tests for the code that handles untrusted bytes (file and packet parsers in C, C++, Rust, Go, Python or JS, decoders, serializers, deserializers, token and header parsing, protocol state machines), then minimize, dedupe and triage the crashes into verified findings with regression tests. Covers libFuzzer, cargo-fuzz, Go native fuzzing, Ath…
skills/fuzzing-harness/ on GitHub (opens in a new tab)SKILL.md -
hipaa-audit
Audit applications and infrastructure handling Protected Health Information against HIPAA — Security Rule (administrative, physical, technical safeguards), Privacy Rule, Breach Notification Rule, plus HITECH. Covers ePHI scoping, the 18 HIPAA identifiers, Business Associate Agreement (BAA) chain-of-liability, minimum-necessary standard, and breach notification timing. Use when the user mentions '…
skills/hipaa-audit/ on GitHub (opens in a new tab)SKILL.md -
iam-audit
Audit, design, and migrate Identity and Access Management — cloud provider IAM (AWS, GCP, Azure), identity providers (Okta, Entra ID / Azure AD, Auth0, Google Workspace), application authorization (RBAC, ABAC, ReBAC), and federated identity. Use when the user mentions 'IAM,' 'identity,' 'access management,' 'least privilege,' 'role design,' 'SSO,' 'SAML,' 'OIDC,' 'OAuth,' 'JIT access,' 'just-in-t…
skills/iam-audit/ on GitHub (opens in a new tab)SKILL.md -
incident-triage
Guide rapid triage and initial response to a live security incident happening right now (ransomware hitting a file server, an attacker still in the network, a new admin user nobody created, a host compromised through a CVE) following NIST SP 800-61 Rev. 3 (CSF 2.0 Respond and Recover) — declare, validate and prioritize, contain, preserve evidence, scope, extract IOCs, start the notification clock…
skills/incident-triage/ on GitHub (opens in a new tab)SKILL.md -
log-watch
Set up a scheduled agent that reads a small team's existing production logs, flags suspicious activity, and pages a human, without a SIEM or security staff. Use when the user mentions 'log watch,' 'watch my logs,' 'alert me if someone is attacking,' 'no SIEM,' 'poor man's SIEM,' 'agent reads CloudTrail,' 'cron job that checks logs,' 'page me on suspicious logins,' 'Vercel logs alerting,' 'Sentry…
skills/log-watch/ on GitHub (opens in a new tab)SKILL.md -
malware-triage
Triage a suspicious file statically and safely, and turn it into something defenders can use: a verdict with confidence and evidence, defanged indicators as CSV or STIX 2.1, a YARA signature tested against goodware, and ATT&CK-mapped capabilities to hand to detection and hunting. Covers safe handling, sample identity (SHA-256, ssdeep, TLSH, imphash), reputation lookup without uploading, file type…
skills/malware-triage/ on GitHub (opens in a new tab)SKILL.md -
mobile-audit
Audit iOS and Android mobile applications against OWASP MASVS / MASTG — insecure storage, weak crypto, certificate pinning, deeplinks, IPC, jailbreak/root detection, reverse-engineering resistance. Use when the user mentions 'mobile security,' 'iOS security,' 'Android security,' 'mobile audit,' 'mobile pentest,' 'MASVS,' 'MASTG,' 'certificate pinning,' 'jailbreak detection,' 'root detection,' 'de…
skills/mobile-audit/ on GitHub (opens in a new tab)SKILL.md -
native-code-review
Review C, C++ and Rust source for memory-safety bugs: out-of-bounds reads and writes, integer overflow or truncation that feeds a size, use-after-free and double free, format strings, uninitialized memory, Rust unsafe soundness, FFI boundaries, parsers of untrusted input, and secrets left in memory. Also checks compiler hardening flags and recommends sanitizers, and reports in the shared findings…
skills/native-code-review/ on GitHub (opens in a new tab)SKILL.md -
osint-recon
Gather and correlate open source intelligence from public sources for authorized investigations, threat intelligence, and attack surface assessment. Use when the user mentions 'OSINT,' 'open source intelligence,' 'digital footprint,' 'public records,' 'threat intelligence,' 'investigate a domain,' or needs to research a target using publicly available data.
skills/osint-recon/ on GitHub (opens in a new tab)SKILL.md -
owasp-audit
Audit application source code against the OWASP Top 10:2025 categories — broken access control (incl. SSRF), security misconfiguration, software supply chain failures, cryptographic failures, injection, insecure design, authentication failures, software and data integrity, logging and alerting failures, mishandling of exceptional conditions — with recon, a coverage ledger, per-finding verificatio…
skills/owasp-audit/ on GitHub (opens in a new tab)SKILL.md -
patch-sweep
Respond to a CVE wave across a whole portfolio of apps at once: inventory every repo and the platform project and domain it actually serves, find the real production branch, spot stale manual deploys, decide which apps are affected, mitigate, patch, ship, and confirm production. Use when the user mentions 'patch sweep,' 'patch all my apps,' 'fleet-wide CVE,' 'are any of my apps affected,' 'Next.j…
skills/patch-sweep/ on GitHub (opens in a new tab)SKILL.md -
pci-audit
Audit applications and infrastructure handling payment card data against PCI DSS v4.0.1. Heavy emphasis on scope determination (the single most-leveraged variable) plus the engineering-relevant requirements — Req 3 (storage of CHD), Req 4 (transmission), Req 6 (secure SDLC), Req 7-8 (access), Req 10 (logging), Req 11 (testing), Req 12 (program). Use when the user mentions 'PCI,' 'PCI DSS,' 'PCI D…
skills/pci-audit/ on GitHub (opens in a new tab)SKILL.md -
personal-opsec
Audit one person's own security setup — the founder or operator who holds the keys to the stack — and produce a prioritized gap report. Walks Karpathy's 15-control digital security checklist, adds account-recovery, SIM-swap, registrar, and hardware-key checks, and covers the AI-agent era: tokens your coding agents can read, MCP server trust, inbox-assistant prompt injection, clipboard exposure. U…
skills/personal-opsec/ on GitHub (opens in a new tab)SKILL.md -
privacy-engineering
Implement and audit privacy controls in product and infrastructure — GDPR, CCPA / CPRA, LGPD, PIPEDA. Covers data minimization, lawful basis, consent management, data subject access requests (DSARs — access, deletion, portability), data processing agreements, DPIA / TIA, breach notification timing, data classification, and the technical implementation of 'right to be forgotten' across backups, ca…
skills/privacy-engineering/ on GitHub (opens in a new tab)SKILL.md -
prompt-injection
Audit applications for AI prompt injection, agent security, and LLM permission boundary vulnerabilities, including chatbots and agents hijacked by what they read: a malicious web page in a browsing agent, incoming emails, documents or tickets reaching an agent that can send replies, write files or call tools. Use when the user mentions 'prompt injection,' 'LLM security,' 'AI security,' 'jailbreak…
skills/prompt-injection/ on GitHub (opens in a new tab)SKILL.md -
recon
Perform structured reconnaissance and attack surface enumeration for authorized penetration tests, CTF challenges, and bug bounty programs. Use when the user mentions 'recon,' 'reconnaissance,' 'enumerate,' 'attack surface,' 'subdomain enumeration,' 'port scan,' 'fingerprint,' 'asset discovery,' or needs to map a target's external footprint.
skills/recon/ on GitHub (opens in a new tab)SKILL.md
No skill matches that filter.
Review before you install
A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.