01
Fractional vCISO
Ongoing executive security leadership: program strategy, risk register, board and audit-committee reporting, budget planning, and incident readiness.
You get: a named security leader and a board-ready roadmap.
Services
Security leadership, built for your size and your regulators.
02
AI Governance & Security
Shadow AI discovery, AI risk built into each initiative's business case, agent identity and least privilege, and AI red-team findings mapped to the OWASP Top 10 for LLM Apps, OWASP AI Exchange, and MITRE ATLAS.
You get: visibility and controls where AI actually runs.
03
Compliance Readiness
Plain-English readiness for CMMC / NIST SP 800-171, HIPAA 405(d), SOC 2, and cyber-insurance requirements, with a prioritized, owner-assigned remediation plan.
You get: a gap list with owners and due dates.
04
Security Posture Assessment
A NIST CSF 2.0 based review, with risks prioritized on our 5×5 likelihood-by-impact scale, delivered as an executive report and a 30/60/90-day roadmap.
You get: a clear baseline and what to fix first.
NIST CSF 2.0NIST RMFNIST AI RMFISO 27001ISO/IEC 42001CMMCNIST SP 800-171HIPAASOC 2EU AI ActGDPRCCPAMITRE ATT&CKMITRE ATLASOWASP AI Exchange
Explore
Find what you need.
ServicesFractional vCISO, compliance readiness, AI governance, and security assessments.View services →
AI Consulting for SMBsPut AI to work safely, with packages built for small and mid-sized businesses.Explore AI consulting →
Industries We ServeFinancial services, healthcare, defense suppliers, manufacturing, technology, and more.Find your industry →
Our Approach & Risk LabHow we assess, prioritize, and prove progress, with an interactive risk matrix.See how we work →
Regulatory WatchPlain-English status on CMMC, HIPAA, PCI DSS, the EU CRA, and NIST RMF.Check the latest →
Israeli StartupsPass U.S. security reviews and earn SOC 2 with a U.S.-based fractional CISO.U.S. market entry →
Free Resources
Plain-English readiness self-checks.
Interactive checklists to see where you stand before an audit, assessment, or insurance renewal. Track progress in your browser, then download as Word, Excel, PDF, CSV, or JSON.
CMMC / NIST SP 800-171For defense and aerospace suppliers handling CUI.Open checklist →
HIPAA & 405(d)Security Rule safeguards and recognized healthcare practices.Open checklist →
SOC 2 RoadmapStep-by-step path to a SOC 2 report, including SOC 1 vs. SOC 2 vs. SOC 3.Open checklist →
Cyber InsuranceThe controls underwriters ask about, mapped to CIS Controls v8.Open checklist →
EU Cyber Resilience ActReporting duties live now, plus the December 2027 requirements.Open checklist →
AI GovernanceNIST AI RMF, ISO/IEC 42001, EU AI Act, and OWASP LLM Top 10.Open checklist →
FAQ
Common questions
What is a fractional CISO (vCISO)?
A fractional or virtual CISO is a senior security executive who leads your security program part-time. You get CISO-level strategy, risk management, and board reporting without the cost of a full-time hire.
Who is a good fit for Nexus Security Advisors?
Small and mid-sized businesses in any industry, including financial services, healthcare, defense suppliers, manufacturing, technology, and professional services, that need executive security leadership, are facing an audit or assessment, or are rolling out AI and need it governed.
Can you help us prepare for CMMC?
Yes. We assess your current state against NIST SP 800-171 and CMMC requirements, identify gaps, and build a prioritized, owner-assigned plan to close them.
How do you approach AI governance?
We start by finding the AI tools and agents actually in use, then build AI risk into each initiative's business case, apply least privilege to AI agents, and align to frameworks such as NIST AI RMF, ISO/IEC 42001, the EU AI Act, and the OWASP AI Exchange.
Can we sign an NDA before sharing details?
Yes. We are happy to sign a mutual NDA before any detailed discussion of your environment.
Do you replace our IT team or MSP?
No. We provide security leadership and oversight and work alongside your IT team or managed service provider, helping them prioritize and measure what matters.
How is a fractional CISO engagement priced?
Usually as a predictable monthly retainer sized to your needs, or a fixed fee for project work such as an assessment or readiness sprint. We recommend an option after the free discovery call.
How do we get started?
Complete the short intake on our Get Started page. Tell us your industry, size, and the challenge in front of you, and we'll tell you plainly whether we're a fit.