Per Thorsheim, Microsoft's Dr. Cormac Herley, the UK's NCSC, the Chief Technologist at FTC, I and many others are working hard to kill password expiration. Password expiration is when an organization requires their staff to change their passwords every 60, 90 or XX number of days. Password expiration is also a great example of how security professionals fail by simply repeating old myths or focusing on just mitigating risk, forgetting about the cost or impact of those mitigating controls. Here's is why password expiration must die