Introduction Building on Canada’s Accomplishments in a Dynamic Cyber Landscape What is Cyber Security? Cyber security is the protection of digital information and the infrastructure on which it resides. Cyber security was once the domain of technical experts, but now, in our digital world, we all have a role to play in our individual and collective cyber security. From the Margins to the Mainstream The degree to which digital technology is now integrated into our daily lives would have been unimaginable just a few years ago. From social media, smartphone applications, online shopping, networked devices, the cloud, and beyond, we rely on digital technologies for more than personal enjoyment — they are integral to the systems that underpin our economy and our way of life. These interdependent systems include the 7 of 35 • NATIONAL CYBER SECURITY STRATEGY