We are living in an era of accelerating change. We expect rapid, imminent changes in user interfaces, personal digital services, and the hardware ecosystem. All of these changes will have significant implications for security. These changes include tighter integration of computing with human senses, rapid increases in machines' understanding of the real world, the use of personal data to provide highly individualized services, and a massive change in the hardware ecosystem as we near the end of Moore's Law. I will describe these changes in more detail, and speculate on some of the possible security implications.