Sherif Mansour, the Director of InfoSec at JustEat, shares his insights on how he approaches information security, which involves three lines of defense: controls implemented by the CTO team, assurance and risk articulation provided by the CFO's line, and internal audits performed by an independent third line. He emphasizes the importance of corporate governance, strategy, marketing, leadership, and finance in managing a CISO team, citing Jack Dorsey's approach to prioritizing tasks by theme, such as management, product, marketing, developers, culture, and recruiting. Mansour stresses the value of focusing on people and building strong connections with his teams, asking open-ended questions like "How are you doing?" to encourage deeper conversations, and dealing with fires by focusing on high-impact issues and educating team members about the risks of not addressing every fire.