2018 — Twitter (X): A glitch caused some passwords to be stored in… 2018 330.0M records affected Share on X Technical writeup May 2018. A glitch caused some passwords to be stored in readable text, visible on the internal computer system. Root cause Poor security Referenceshttps://www.reuters.com/article/us-twitter-passwords/twitter-urges-all-users-to-change-passwords-after-glitch-idUSKBN1I42JG