Experienced CISOs, CTOs, and CIOs bring real-world experience
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.
Our mission
Our mission is to empower mid-sized businesses to operate securely with world-class cybersecurity expertise by providing flexible, fractional CISO leadership. We deliver strategic guidance, operational excellence, and trusted partnerships to protect what matters most, enabling our clients to thrive securely in an ever-evolving digital world.
Seasoned practitioners
Our team is led by Sean D. Mack, Managing Director, a seasoned CISO and CIO with deep experience leading security and technology transformation in both enterprise and high-growth environments.
Sean’s leadership brings a balance of strategic vision, hands-on technical expertise, and the ability to translate cyber risk into meaningful business impact.
Sean D. Mack
ISMG's fractional CXO practice to bridge tech leadership gaps
At RSAC Conference 2025, CXO Advisor founder Sean Mack highlighted the growing demand for fractional CISOs, as organizations face tighter budgets and increasingly complex cyber threats.
CXO Advisor: Backed by ISMG’s global cybersecurity network
Breaking news, education, and industry intelligence: online and in-person
CyberEdBoard
A private, community-driven ecosystem for influential security executives to enhance professional brands, exchange critical insights and connect with peers.
CyberEd.io
Together, we empower leaders and their teams with the knowledge and strategies needed to strengthen defenses, build resilience, and drive a culture of security.
CIO.inc
A media site designed to bridge the divide that exists between CISOs and CIOs, and empower them to drive growth while effectively securing the digital ecosystem.
ISMG Network
The world’s largest online B2B media network, engaging over 2 million executives and decision-makers worldwide on cybersecurity, AI and information technology,
ISMG Events
Geo-targeted, industry-specific, and topic-driven events designed to provide actionable education and networking with peers and our expert speakers
ISMG Studio
ISMG.Studio is the leading platform for cybersecurity and technology leaders, hosting impactful industry conversations for a community of 2 million and growing.