We train the people who secure everyone’s future.
Since 2009, Nemstar has equipped over 13,000 cybersecurity professionals with the skills to protect organisations against evolving threats. Our comprehensive training spans from CISMP foundations to advanced CISSP and SOC Analysis, backed by a success or resit guarantee. Global leaders like PwC, Morgan Stanley, and GCHQ trust our flexible delivery methods—online, onsite, or hybrid—combined with mentoring, gamified learning, and targeted exam support to build lasting. security expertise.
Nemstar was born out of a vision to transform how organisations approach cybersecurity training. Founder Sean Hanna, an award-winning cybersecurity expert, conceptualised the name Nemstar years before the business was formalised, drawing inspiration from electromagnetic pulse theory and the drive to create something powerful and disruptive.
In 2009, Sean turned that vision into reality, frustrated by generic, outdated training approaches that failed to meet businesses’ real needs. He set out to build a company that provided tailored, practical training aligned with real-world challenges. Since then, Nemstar has trained over 13,000 professionals, partnering with global leaders like PwC and Morgan Stanley to deliver measurable results.
What began as an idea to shift perspectives has grown into a company that trains the people who protect critical assets, safeguard reputations, and secure the future. Nemstar is more than training—it’s a dedication to building expertise and delivering impactful results.
Nemstar’s leadership team combines decades of experience in cybersecurity, operations, and training. Led by founder Sean Hanna, a globally recognised cybersecurity expert, and operations director Caroline Hanna, an expert in delivering exceptional customer experiences, our team is dedicated to empowering organisations with impactful, results-driven training solutions.
Sean Hanna
Founder & Director
Sean Hanna founded Nemstar in 2009, leveraging 20+ years of cybersecurity expertise to deliver business-focused technical training. As EC Council’s Global Security Trainer of the Year, he has trained thousands globally, including at Microsoft, GCHQ, and the U.S. Navy. Sean led Microsoft Exchange 2000’s technical training launch and helps organizations strengthen their cybersecurity defenses.
Caroline Hanna
Director of Operations
A strategic leader with 20+ years’ experience across public and private sectors, Caroline drives business development and growth at Nemstar. Her expertise spans communications, stakeholder engagement, and project management, backed by GDPR, Prince2, and Information Security certifications. Since 2019, she has enhanced Nemstar’s operational efficiency and customer satisfaction through her commitment to excellence and innovation.
At Nemstar, our values shape how we deliver impactful training and support, ensuring every participant and organisation achieves meaningful results.
We provide a supportive environment where participants feel confident to grow, develop, and succeed.
Our training is accessible and tailored to include neurodiverse and culturally diverse participants, reflecting the communities we serve.
We focus on building self-reliance, equipping learners to take ownership of their skills and apply them with confidence.
We prioritise fairness and transparency, with all decisions based on skills, experience, and merit.
Choosing Nemstar means partnering with a trusted leader in cybersecurity training, dedicated to delivering measurable results and long-term impact. Here’s why organisations worldwide choose us:
Our unique training methodology ensures participants not only gain the knowledge they need but also achieve certification success, backed by our guaranteed success or resit programme.
We focus on the cybersecurity threats of tomorrow, not yesterday. With the latest thinking, we prepare your team for what is next, offering bespoke programmes and flexible delivery options (online, onsite, or hybrid) to meet your specific needs.
With over 13,000 professionals trained globally and a client portfolio that includes Fortune 500 companies and government organisations, we bring unmatched experience to every programme.
We build strong relationships with our clients, offering ongoing support and tailored training programs that align with their strategic goals.
Beyond training, we provide mentoring, Exam Cram sessions, and gamified learning to ensure participants are confident, capable, and ready to apply their skills immediately.
We focus on delivering training that not only imparts knowledge but also drives strategic success and lasting results.
At Nemstar, we believe that effective training combines preparation, engagement, and results. Our methodology ensures every participant gains the knowledge, confidence, and skills needed to succeed, whether tackling the cybersecurity threats of today or preparing for the challenges of tomorrow.
We start by ensuring every participant has the right foundation. Through pre-course materials and assessments, we identify knowledge gaps and align learning objectives, giving everyone the tools they need to begin confidently.
Our training focuses on practical, real-world skills. Delivered through interactive labs, gamified learning, and expert-led sessions, we align every programme to industry frameworks like NICE 2.0, ensuring participants can apply their learning directly to their roles.
Success does not stop at the classroom. With Exam Cram sessions, mentoring, and practice questions, we support participants all the way to certification, offering a Success or Resit Guarantee to ensure course participants achieve their goals.
Our approach delivers more than certifications—it builds resilience, confidence, and expertise that organisations and individuals can rely on. At Nemstar, we don’t just train—we transform.
Nemstar’s Security Academy delivers customised cybersecurity training for organisations, scaling from 20 to 300 participants. We collaborate with your leadership to identify gaps and goals, then develop targeted programs to build your team’s security capabilities and protect your company’s assets.