Risto Siilasmaa, a pioneer in IT security and early investor in Detectify, shares insights into the evolving landscape of cybersecurity, highlighting the shift from physical to digital security with the advent of PCs, smartphones, and cloud technology. Inspired by cyberpunk literature and early computer viruses, Siilasmaa emphasizes the importance of understanding potential threats and vulnerabilities within a company, advocating for proactive measures such as red team attacks to test security systems. He notes the increasing sophistication of attackers, including nation-states and organized crime, and the role of cryptocurrency in driving ransomware. Siilasmaa also stresses the significance of automation and machine learning in managing security tasks and highlights the importance of engaging white hat hackers for better detection and defense strategies. He underscores the CEO's responsibility in cybersecurity and the challenges posed by subcontractors and suppliers, particularly in large corporations like Nokia. Additionally, Siilasmaa discusses the potential impact of GDPR on European companies, mandating stronger protections against cyber threats, and advises building a security-savvy organizational culture over time to adapt to the ever-changing threat landscape.