In this week’s Cyber Security Brief podcast, we discuss the claims and counter claims related to the Bloomberg Businessweek story published at the start of October that alleged Chinese spies had infiltrated U.S. companies by implanting secret chips on Super Micro motherboards – a story that has been rebutted by almost all the companies mentioned in it, including Super Micro itself, Apple and Amazon. With calls from those companies now for Bloomberg to retract the story, we discuss this ongoing saga. Also in the last week, a Russian woman was indicted in the U.S. on charges of playing a role in a conspiracy to interfere in the U.S. political system, meanwhile, Twitter released a huge trove of tweets it had identified that were attempting to influence political campaigns in the last couple of years. We consider the significance of that move from the social media giant.