senior-security
Use when the user asks for STRIDE threat modeling, DREAD risk scoring, data-flow-diagram threat analysis, or a quick secret scan — or when a security request needs routing to the right specialist skill (pen-testing, incident response, cloud posture, red team, AI security, threat hunting, secure code review). This skill owns threat modeling; everything else routes to a sibling.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/alirezarezvani/claude-skills --skill senior-security- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads senior-security automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Senior Security Engineer — Threat Modeling + Security Router
This skill does exactly one job itself — STRIDE/DREAD threat modeling (plus a quick secret scan) — and routes every other security request to the specialist skill that owns that lane. Do not duplicate sibling content here; route instead.
Routing Table (read this first)
| The user wants... | Route to | Why that skill owns it |
|---|---|---|
| Vulnerability assessment, pen-test methodology, OWASP Top 10 testing | ../security-pen-testing/ | Ships vulnerability_scanner.py + dependency_auditor.py with exit-code contracts |
| Incident triage, SEV classification, forensics, containment | ../incident-response/ | SEV1–SEV4 taxonomy, NIST SP 800-61 phases, incident_triage.py |
| Production outage command (non-security incidents) | ../incident-commander/ | Severity classifier + timeline + postmortem tools |
| Security monitoring, CVE triage SLAs, compliance checks (SOC 2 etc.), security headers | ../senior-secops/ | security_scanner.py + compliance_checker.py, CVE SLA table |
| Hostile/adversarial code review | ../adversarial-reviewer/ | 3-persona review with BLOCK/CONCERNS/CLEAN verdict |
| Secure code review as part of general review | ../code-reviewer/ | Language dispatch + regression fixtures |
| Cloud IAM escalation paths, S3 exposure, security groups | ../cloud-security/ | cloud_posture_check.py with per-check exit codes |
| Threat hunting, IOC sweeps, anomaly detection | ../threat-detection/ | z-score anomaly + IOC staleness tooling |
| Red-team engagement planning, ATT&CK kill chains | ../red-team/ | engagement_planner.py with authorization gate |
| LLM/AI attack surface (prompt injection, poisoning) | ../ai-security/ | ATLAS-mapped ai_threat_scanner.py |
If the request spans lanes (e.g., "secure this new architecture"), do the threat model here first — its output (prioritized threats + mitigations) tells you which siblings to load next. Never bulk-load multiple security skills speculatively.
What This Skill Owns: STRIDE Threat Modeling
Workflow
- Scope: assets to protect, trust boundaries, data flows (external entities, processes, data stores, flows).
- Generate the threat model per component:
Output: per-threat STRIDE category, DREAD score (Damage, Reproducibility, Exploitability, Affected users, Discoverability — each 1–10), and suggested mitigations. Repeat per DFD element;
python3 scripts/threat_modeler.py --component "User Authentication" --assets "credentials,sessions" --json --output threats.json--interactivewalks scoping questions;--list-threatsshows the threat database. - Consume the output: sort
threats.jsonby DREAD score descending; everything ≥ 7 average needs a named mitigation owner before the design ships. Map each mitigation to the responsible sibling lane (e.g., IAM threats →cloud-security, injection threats →code-reviewer). - Quick secret sweep while you have the codebase open:
20+ patterns (AWS keys, GitHub tokens, private keys, generic credentials). Any critical/high finding blocks merge until rotated and moved to a secret manager.
python3 scripts/secret_scanner.py /path/to/project --format json --severity high - Verification gate: every DFD element has ≥ 1 STRIDE row considered, every threat with DREAD ≥ 7 has an owner + mitigation, and the secret scan exits with zero high/critical findings. Re-run both tools after mitigations land — that re-run is the done signal, not the document.
STRIDE per Element Matrix
| DFD Element | S | T | R | I | D | E |
|---|---|---|---|---|---|---|
| External Entity | X | X | ||||
| Process | X | X | X | X | X | X |
| Data Store | X | X | X | X | ||
| Data Flow | X | X | X |
(S=Spoofing→authn, T=Tampering→integrity, R=Repudiation→audit logs, I=Info Disclosure→encryption/access control, D=DoS→rate limiting/redundancy, E=Elevation→least privilege.)
References (load on demand)
| Document | Content |
|---|---|
| references/threat-modeling-guide.md | STRIDE methodology, attack trees, DREAD scoring, DFD creation |
| references/security-architecture-patterns.md | Zero Trust, defense-in-depth, authentication patterns, API security |
| references/cryptography-implementation.md | AES-GCM, Ed25519, password hashing (Argon2id), key management |
The architecture and crypto references are kept because no sibling ships them; for operating those controls (scanning, compliance, monitoring) still route to senior-secops.
FAQ
What does the senior-security skill do?
Use when the user asks for STRIDE threat modeling, DREAD risk scoring, data-flow-diagram threat analysis, or a quick secret scan — or when a security request needs routing to the right specialist skill (pen-testing, incident response, cloud posture, red team, AI security, threat hunting, secure code review). This skill owns threat modeling; everything else routes to a sibling.
How do I install senior-security?
Run npx skills add https://github.com/alirezarezvani/claude-skills --skill senior-security in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/senior-security/ (personal) or .claude/skills/senior-security/ (project).
Which AI agents can use senior-security?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is senior-security safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains senior-security?
It is published by alirezarezvani in alirezarezvani/claude-skills. It has 1,284 recorded installs.
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