Yahoo Flaw Allows an Attacker To Read Any User’s Emails

Yahoo says it has fixed a severe security vulnerability in its email service that allowed an attacker to read a victim’s email inbox.

https://tech.slashdot.org/story/16/12/08/1639219/yahoo-fixes-flaw-allowing-an-attacker-to-read-any-users-emails

http://www.zdnet.com/article/yahoo-fixes-flaw-letting-attacker-read-victims-emails/