The document discusses how network, endpoint, cloud, custom development, off-the-shelf, and security tool security are all difficult to implement effectively. It notes that attacks can come from many vectors, including supply chains, social engineering, and zero-day exploits. The document argues that while nothing is perfectly secure, organizations must work to manage risks through long-term policies, trained security personnel, standardization, vendor responsibility, and limiting zero-day vulnerabilities. The overarching message is that cybersecurity is a complex challenge due to the inherent insecurity of modern computing systems and interconnected networks.