Expert Cybersecurity Leadership Without the Full-time Overhead
Your embedded security partner
Connecting mid-market, high-growth and enterprise organizations with proven CISOs, CIOs and CTOs, offering strategic advisory and executive-level engagement models.
Manage enterprise-grade threats
Mid-sized and fast-growing companies face enterprise-grade cyber threats, regulatory scrutiny, and rising client demands - but often lack the resources or timeline to recruit full-time cybersecurity executives.
Close the cybersecurity resource gap
With CISO hiring cycles stretching up to 12 months, organizations need a smarter, faster solution. CXOAdvisor by ISMG delivers proven cybersecurity leadership on a flexible, cost-effective basis.
Flexible engagement models
CXO Advisory services are designed to support different organizational needs. Ongoing board or CISO advisory, interim or fractional CISO, CIO, or CTO roles, project-based support for audits, assessments, or compliance programs.
Fractional CXO practice to bridge tech leadership gaps
ISMG CXO Advisory Practice's Sean Mack on Criteria for Selecting a Fractional CISO
A comprehensive suite of CISO services
Whatever your requirement, our fractional CISOs embed directly into your leadership team.
Risk evaluation & management
Assess and enhance cybersecurity posture by evaluating current risk, identifying gaps, and designing roadmaps aligned with business goals.
Board-level insights
Support executive communication with dashboards that translate technical risk into board-level insights and outcomes.
Governance & compliance
Lead compliance initiatives across HIPAA, GDPR, DORA, ISO 27001, SOC 2, and SEC, providing audit readiness and sustained governance.
Incident preparedness
Enable incident preparedness and response through battle-tested plans and hands-on crisis leadership.
Organizational enablement
Shape organizational design, advance team development, and inspire mentorship.
Cost optimization
Drive cost optimization through budget analysis and reducing vendor sprawl.
Why choose us
CXOAdvisor utilizes ISMG’s unique position at the center of the cybersecurity ecosystem, combining practical experience with near real-time threat intelligence, community insight, and workforce enablement.
Leadership in technology and security
Experienced CISOs, CTOs, and CIOs bring real-world experience, strategic insight and hands-on execution, enabling the alignment of cybersecurity initiatives with business objectives.
Business-aligned approach
A focus on aligning security execution and implementation with organizational business goals ensures that cybersecurity strategies drive measurable value and support growth.
Market intelligence & threat insights
We’re backed by ISMG, a global cybersecurity intelligence leader with deep media, research, and community roots bringing early insight into emerging threats, regulatory shifts, and industry trends.
Sean D. Mack, through ISMG’s CXO Advisor practice, has been a critical partner to IINE in advancing our technology and cybersecurity strategy. He quickly understood the complexity of our nonprofit environment — balancing fragmented systems, compliance-driven reporting, and the urgent need for efficiency — and provided clear, actionable strategies that align directly with our mission.
CXO Advisor helped us take a step back and design a forward-looking strategy that not only reduces duplication and improves data visibility but also significantly enhances our cybersecurity posture. With phishing risks, MFA gaps, and device management challenges in play, Sean’s guidance gave us confidence that we can both protect sensitive client data and meet funder and insurer expectations.
What stood out most is the balance of vision and practicality. Sean D. Mack brings deep technical expertise combined with a nonprofit lens. His guidance on governance, budgeting discipline, and cybersecurity has been transformative, helping IINE build resilience, safeguard our community, and ensure technology investments directly advance our mission.
Real-World Engagement
A national staffing firm relied on us to lead comprehensive cybersecurity assessments, including penetration testing, and develop a robust strategy to protect sensitive data and meet regulatory requirements.
A venture-backed hiring tech startup engaged us to define their security strategy, prepare for enterprise due diligence, and support customer acquisition by strengthening platform security.
A global cybersecurity product vendor leveraged our executive leadership to enhance internal security governance, refine customer-facing messaging, and align product features with evolving buyer needs.
Latest resources
Let's Talk
If you're looking to strengthen your security posture, prepare for compliance, or need strategic guidance without the burden of a full-time hire, let's talk. We'll start with a quick conversation to understand your current security maturity, your goals, and where a fractional CISO could make the biggest impact - quickly.