The communications ministry in Japan has reportedly decided that it is not necessary to keep changing internet passwords regularly. The ministry instead advises citizens to use one hard-to-guess password per online account. The change in the official advice has reportedly been made based on a recommendation that the National Center of Incident Readiness and Strategy for Cybersecurity (NISC) had made in its information security handbook, which has been published in late 2016. The recommendations of the NISC are based on global trends, including a research report by the University of North Carolina, in 2010.”]
Source: https://hackercombat.com/regular-change-of-internet-passwords-not-necessary/