This week we look back at the week that was in cyber security. Dick O’Brien is joined by threat researchers Candid Wueest and Brigid O Gorman to discuss the latest research Symantec has just published about how Powershell is being leveraged by malicious actors. We also discuss extortion scams where people are tricked into transferring money to scammers who claim they have video of them visiting adult websites, how Twitter is trying to clean up its platform, and the financial cost of data breaches for business.