OpenID and OAuth 2.0, two open standards that are commonly used to allow users to log into a website using credentials from another website, have been in the spotlight over the past several weeks following the publication of a security flaw that could allow attackers to obtain user data.
Last year, Google announced that Android app developers would need to target recent APIs starting mid-2018. That time has come and Google has not changed its tone. Facebook has indicated that its main app will target API level 26, Android Oreo 8. Other Facebook apps should follow suit