Keith Brian Alexander is a four star general (now retired) who previously served as the Director of the NSA and the first Commander of the US Cyber Command. Here is a quote from his 2013 Blackhat keynote that was one to remember:
"As our dependence on information networks increases, it will take a team to eliminate vulnerabilities and counter the ever-growing threats to the network. We can succeed in securing it by building strong partnerships between and within the private and public sectors, encouraging information sharing and collaboration, and creating and leveraging the technology that affords us the opportunity to secure cyberspace."
