In this video, Al Jazeera’s Josh Rushing interviews the Citizen Lab’s Ron Deibert on a special episode of “Fault Lines” dedicated to exploring issues of cyberwar, cyberespionage and national security. The episode features the Citizen Lab’s GhostNet Report, problems of cyber attack attribution, and the militarization of cyberspace. The program also includes interviews from Michael Chertoff, Former Officer of Homeland Security and other cybersecurity experts.