Strategic Security Leadership, On Demand.

Gain executive-level guidance to strengthen your cyber posture without the cost of a full-time CISO.

CISO as A Service Highlight

On-demand security leadership — strategic, scalable, and board-ready.

Information Security Icon

Information Security

Safeguard critical assets with expert oversight and enterprise-grade policies.

Holistic protection for data and networks.

Expert Guidance and Support Icon

Expert Guidance and Support

Gain access to seasoned CISOs for governance, compliance, and risk strategy.

Board-level insights, tailored to your business.

Cost Effective Service Icon

Cost Effective Service

Get executive leadership without the full-time cost of a CISO.

Flexible, scalable, budget-friendly security leadership.

Trusted. Tested. Empowering

Turn security gaps into prioritized business fixes.

Expert Testers

Hands-on IT security specialists.

Realistic Simulations

Threats that mirror real-world attacks.

Compliance Ready

Reports aligned with industry standards.

Actionable Results

Clear fixes for your team.

Insight

Stay ahead with the latest publications, research briefs, and expert perspectives on cybersecurity.

Web App Penetration Testing
WhitePaper

Web App Penetration Testing

Actionable, easy-to-understand reports for leadership and technical teams.

Driving Portfolio-wide Value with Cybersecurity
WhitePaper

Driving Portfolio-wide Value with Cybersecurity

Comprehensive guide to maximizing cybersecurity value across your portfolio companies.

Atumcell Publications

Atumcell Publications

Explore our latest whitepapers, case studies, and reports designed to strengthen security strategy.

Frequently Asked Questions

A fractional CISO provides executive-level security leadership for organizations that need the expertise without the full-time cost. This includes building your security strategy, owning risk and compliance programs, presenting to the board, managing vendor relationships, and overseeing incident response planning.

Engagements are flexible — from 8 hours/month for strategy and governance only, up to 2–3 days/week for organizations going through rapid growth, a compliance audit, or an incident. We agree on scope and cadence upfront.

No. Many clients bring in a fractional CISO precisely because they're building their security function from scratch. We help hire, structure, and mentor the team alongside providing executive leadership.

Monthly retainer. We agree on deliverables, hours, and pricing before the engagement starts. There are no surprise invoices.

Atumcell

Discover Your
Cyber Risk Level.

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