About Extremisphere
Extremisphere is an independent consultancy and simulation lab at the forefront of digital threat preparedness. We specialise in designing scenario-based tabletop exercises, advisory services, and training that help organisations anticipate and respond to complex, high-stakes challenges—from disinformation spikes to violent extremist activity.
Our work is grounded in real-world experience and a deep understanding of how violent actors operate across platforms and networks. We support clients in navigating emerging threats with clarity, resilience, and strategic foresight.
Our Mission
Extremisphere empowers organisations to navigate crises and emerging threats with confidence. Through bespoke simulations and strategic consultancy, we build readiness, strengthen resilience, and support decision-making under pressure.
Our approach
Tailored solutions: Every service is customised to align with your organisation’s unique challenges and goals.
Proactive strategies: We leverage cutting-edge insights and horizon-scanning to anticipate and address future risks.
Expert team: Our specialists bring decades of experience in crisis management, policy advisory, and strategic planning.
With flexible, insight-driven solutions and deep operational experience, Extremisphere is your trusted partner in building long-term resilience and preparedness.
Founder
Extremisphere is led by Lisa McInerney, an internationally recognised expert in online violent extremism and digital threat response. With almost two decades of work focused on online behaviours linked to violent extremism and terrorism—including roles in research, enforcement policy, and strategic advisory—Lisa brings deep insight into the cross-platform dynamics of violent movements and the practical realities of responding to them.
Previously, Lisa served as Twitter’s Global Policy Area Lead for Violent Organizations, where she led the team responsible for crisis response and for policies related to violent organisations. She also designed interventions to proactively address manifestations of violent extremism and terrorism on the platform. Before this, she was Programme Manager for VOX-Pol, a European Commission-funded Network of Excellence dedicated to the study of violent online political extremism.
Lisa’s expertise has been sought globally, with contributions to the United Nations, European Commission, and the OSCE, among others. Her work bridges rigorous research and real-world practice, anchoring Extremisphere’s services in both strategic depth and hands–on relevance.
Ready to strengthen your organisation’s resilience?