Last week, former Secretary of Homeland Security Jeh Johnson addressed the Boston Conference on Cybersecurity in a speech titled "Cyberspace is the New Battlespace." The next day, Secretary Johnson sat down with Harvard Law professor and Lawfare co-founder Jack Goldsmith to discuss the themes his speech reflected on. They discussed the hacking and exfiltration of data, the vulnerabilities of the U.S. electoral infrastructure to cyberattacks, and the problem of fake news and disinformation—and what we might do to stem it.