Twitter has fixed a bug that stored passwords unmasked in an internal log. Twitter has no reason to believe password information ever left Twitters systems or was misused by anyone. Change your password on Twitter and on any other service where you may have used the same password. Use a strong password that you dont reuse on other websites. Enable login verification, also known as two factor authentication, to increase account security. Use a password manager to make sure youre using strong, unique passwords everywhere.”]
Source: https://blog.twitter.com/official/en_us/topics/company/2018/keeping-your-account-secure.html