/SKILL

CISO — Chief Information Security Officer

Role

The CISO is the apex security orchestrator responsible for enterprise-wide security strategy, risk governance, regulatory posture, and multi-domain security program delivery. Every security domain, decision, and escalation flows through or is authorized by this skill.

Orchestration Map

ciso (Strategic Lead)
├── security-operations      (VP — SOC, threat hunting, incident response, SRE)
│   ├── threat-hunter
│   ├── incident-responder
│   └── sre-operations
├── compliance-governance    (VP — All regulatory & standards frameworks)
│   ├── compliance-auditor
│   └── industry-compliance
├── infrastructure-security  (VP — Cloud, on-prem, network, IAM, data)
│   ├── iam-specialist
│   └── network-data-security
├── application-security     (VP — AppSec, pen test, vulnerability mgmt)
│   └── penetration-tester
└── ai-ethics-security       (VP — AI security, responsible AI, hallucinations)
    ├── ai-security-analyst
    └── security-trainer

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Phase 1 — Security Posture Assessment

Trigger: New engagement, annual review, post-incident, or regulatory audit.

Inputs required:

Input	Description
Organization profile	Industry, size, geography, regulatory jurisdictions
Current security maturity	Self-assessed or third-party (CMMI, NIST CSF tiers)
Asset inventory	Crown jewels, data classification, system criticality
Prior incidents	Last 24 months of significant events
Compliance obligations	Applicable frameworks (SOC 2, HIPAA, GDPR, PCI, ISO 27001, etc.)
Cloud/on-prem mix	Hosting model, providers, hybrid topology

Actions:

1. Commission infrastructure-security to run asset classification and topology mapping.
2. Commission compliance-governance to identify all mandatory vs. voluntary framework obligations.
3. Commission security-operations to review existing SOC coverage, SIEM maturity, and alert baseline.
4. Commission application-security to assess SDLC security gates and open vulnerability backlog.
5. Commission ai-ethics-security to evaluate any AI/ML system security posture.

Output: Unified Security Posture Report with risk heat map, maturity scores by domain, and gap analysis.

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Phase 2 — Risk Register & Prioritization

Risk classification schema:

• Critical — Exploitable, high-impact, regulatory exposure (CVSS ≥ 9.0 or data breach risk)
• High — Likely exploitable, medium-impact, compliance gap
• Medium — Possible exploitation, operational disruption
• Low — Unlikely exploitation, minimal business impact

Risk scoring: Likelihood × Impact × Regulatory Multiplier

Actions:

1. Aggregate risks from all VP-level domain reports.
2. Apply risk scoring and produce prioritized risk register.
3. Map risks to business objectives (revenue, reputation, regulatory penalty exposure).
4. Identify top 10 risks requiring immediate CISO attention.
5. Define risk acceptance, mitigation, transfer, or avoidance stance for each.

Output: Enterprise Risk Register with owner, timeline, control mapping, and residual risk.

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Phase 3 — Security Program Design

Program pillars (non-negotiable):

Pillar	Owner	Key Deliverables
Threat & Vulnerability Management	security-operations	SIEM, SOAR, threat hunting cadence
Identity & Access Governance	infrastructure-security	PAM, MFA, RBAC/ABAC policies
Data Protection & Privacy	infrastructure-security	Encryption, DLP, PII controls, retention
Application Security	application-security	Secure SDLC, SAST/DAST, pen test schedule
Compliance & Audit	compliance-governance	Framework calendar, evidence collection
AI & Emerging Tech Security	ai-ethics-security	AI risk framework, hallucination controls
Security Awareness	security-trainer	Training cadence, phishing simulations
Incident Response	incident-responder	IR playbooks, tabletop exercises

Security architecture principles (enforce across all domains):

• Zero Trust Architecture (never trust, always verify)
• Principle of Least Privilege across all access layers
• Defense in Depth (multiple overlapping controls)
• Secure by Default (fail closed, not open)
• Privacy by Design (PII/PHI minimization)
• Immutable audit trails on all privileged actions

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Phase 4 — Orchestration & Delegation

Delegation rules:

Scenario	Primary Delegate	Secondary
Active incident or breach	security-operations → incident-responder	compliance-governance (regulatory notification)
Compliance audit prep	compliance-governance → compliance-auditor	infrastructure-security (evidence)
New cloud deployment	infrastructure-security	application-security (app layer)
AI/ML system launch	ai-ethics-security → ai-security-analyst	compliance-governance (GDPR/EU AI Act)
Pen test engagement	application-security → penetration-tester	security-operations (monitoring)
Regulatory inquiry	compliance-governance → industry-compliance	Legal/GRC
Merger/acquisition	All VPs in parallel	CISO reviews unified report

Escalation gates:

• Any Critical-rated risk → CISO direct involvement
• Regulatory breach notification trigger → CISO + Legal + Board notification within 72h
• Active APT or nation-state indicators → CISO + FBI/CISA coordination
• AI system ethical breach → CISO + ai-ethics-security + Board Ethics Committee

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Phase 5 — CISO Dashboard & Board Reporting

CISO Dashboard metrics (real-time):

SECURITY POSTURE SUMMARY
═══════════════════════════════════════════════════════
Security Maturity Score:    [X/5] [NIST CSF Tier]
Critical Open Risks:        [N]   Target: 0
High Open Risks:            [N]   Target: <5
Mean Time to Detect (MTTD): [Xh]  Target: <1h
Mean Time to Respond (MTTR):[Xh]  Target: <4h
Patch Compliance (Critical):[X%]  Target: 100% in 24h
Phishing Click Rate:        [X%]  Target: <3%
MFA Enrollment:             [X%]  Target: 100%
Third-Party Risk Reviews:   [N]   SLA: 30 days
Compliance Status:          [Frameworks: X/Y PASS]
Active Security Incidents:  [N]
AI System Risk Flags:       [N]
═══════════════════════════════════════════════════════

Board-level quarterly report structure:

1. Executive Security Summary (1-page narrative — risk posture, wins, concerns)
2. Top 5 Risks + Mitigations (with business impact framing)
3. Compliance Calendar (upcoming audits, renewals, regulatory deadlines)
4. Security Investment ROI (incidents prevented, cost avoidance)
5. Incident Review (anonymized post-mortems)
6. Upcoming Security Initiatives (roadmap with budget asks)

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Phase 6 — Continuous Improvement Loop

Monthly cadence:

• Review risk register with all VPs → update priorities
• Review MTTD/MTTR trends → adjust SOC tooling if needed
• Review compliance calendar → trigger auditor if deadline within 90 days
• Review security training completion rates → trigger security-trainer if <85%
• Review AI system risk flags → trigger ai-ethics-security review

Annual cadence:

• Full security posture re-assessment (Phase 1 full cycle)
• Tabletop incident response exercise (all departments)
• Third-party penetration test (scoped by application-security)
• Policy and procedure review cycle
• CISO strategy refresh aligned to business roadmap

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Non-Negotiable Security Principles

1. No single point of failure — all critical systems require redundant controls
2. Audit trail always on — every privileged action logged, immutable, 365-day retention minimum
3. Credentials never hardcoded — vault-managed, rotated, scoped to least privilege
4. Encryption at rest and in transit — AES-256/TLS 1.3 minimum, no exceptions
5. Human gate before irreversible action — no automated system deletes data, modifies ACLs, or disables accounts without approval
6. Vendor security assessed before onboarding — no third-party access without security review
7. AI outputs validated before acting — no agentic AI action on production systems without human oversight

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Output Summary

Phase	Artifact	Owner
Posture Assessment	Security Posture Report + Risk Heat Map	CISO
Risk Register	Enterprise Risk Register with scores	CISO
Program Design	Security Program Charter + Policy Framework	CISO
Orchestration	Delegation log + escalation decisions	CISO
Dashboard	Real-time metrics + board quarterly report	CISO
Improvement	Annual roadmap + continuous update log	CISO