Security Ledger Editor in Chief Paul Roberts sits down to talk with Dmitri Alperovitch, the co-founder and Chief Technology Officer at the firm CrowdStrike. An expert in advanced persistent threat style attacks - many of them launched by nation backed hackers - Dmitri talks about the significance of Russia's hacking of the 2016 presidential election in the U.S. and how the U.S. government may respond to future cyber threats.