Tomasz Zysko, also known as CrazyRat, brings over 25 years of expertise in cybersecurity, specializing in penetration testing, red teaming, architecture, and leadership. Starting his career as a Software Engineer, Tomasz quickly advanced due to his strategic mindset and technical skills. He has successfully worked across various industries such as FinTech, insurance, and cryptocurrency, managing extensive red team operations and penetrating critical IT and OT infrastructures. Tomasz has built security teams capable of independent operation, focusing on vulnerability identification and effective remediation aligned with business strategies. His leadership fosters knowledge sharing and empowerment, collaborating closely with development and business units to embed security best practices. Beyond hands-on work, he offers vCISO consultancy, guiding organizations in developing robust cybersecurity programs tailored to their needs.