Single-factor authentication is a method of signing in users to websites and remote systems by using only one way of verifying their identity, typically a combination of username and password. It’s considered to be of low-security, since it heavily relies on “matching one factor such as a password to a username to gain access to a system” The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is considering adding a number of other “bad” cybersecurity practices to the catalog.”]
Source: https://thehackernews.com/2021/08/cisa-adds-single-factor-authentication.html