Still looking for a scary costume for this Halloween? Here's a terrifying idea: Dress up like an "attack vector" or an "advanced persistent threat."This week's topic of conversation is a combination disaster movie and cat-and-mouse political thriller -- encompassing extreme weather, hacking and political espionage.We're talking security threats to the electric grid with Dr. Paul Stockton, an international security expert based in Washington, DC.Paul is the managing director for Sonecon, where he advises utilities and other operators of critical infrastructure on a wide range of security threats. Before that, he was Assistant Secretary of Homeland Defense and America’s Security Affairs, where he directed the agency’s response to Superstorm Sandy and the Deepwater Horizon oil spill. In this interview, Dr. Stockton describes the many different vulnerabilities along the electric grid. How are they evolving? What can we learn from them?Recommended reading:Paul Stockton analysis: How the Nation’s Electric Utilities Can Speed Recovery from Cyber-Induced BlackoutsGTM: Energy Sector Ups Cybersecurity Amid Growing IT ThreatsGTM e-book: How Superstorm Sandy changed America's GridSubscribe to The Interchange podcast via Apple Podcasts, Google Play, Stitcher or wherever you find your audio content.