But it advised the users to contemplate changing their Twitter passwords "out of an abundance of caution".
The company declined to comment on when the bug was discovered, how long it had been storing passwords in this manner and how many passwords were affected.
It is unknown how or why the bug occurred, but Twitter already fixed the problem and informed all users about the glitch - everyone now receives a pop-up window advising to change the password upon an attempt to log in. However, users are still being urged to change their password as a precaution.
TechRepublic sister site ZDNet said that Twitter didn't indicate how many passwords were stored in plain text, but that the number may have been "substantial", and that the log existed for several months.
Exhausted of the endless partisan bickering and memes, you stopped posting to Twitter in 2016 and took up knitting. These are used to confirm account credentials without revealing the actual password.
However, the company said it recently discovered a bug, and that the passwords were being stored unmasked in an internal log.
As a result, Agrawal assures the general public that he and his team "found this error ourselves, removed the passwords, and are implementing plans to prevent this bug from happening again".
Despite Twitter's bold assurances, it is hard to ignore past occasions when large amounts of Twitter passwords have appeared for sale. It should be pointed out that reusing passwords across different services is not recommended for user safety.
Your password is now changed on Twitter.
Twitter does not store users' passwords. Otherwise, you could leave other online accounts exposed to hackers.
Mr Cluley said enabling two-factor authentication that adds another ID check to login attempts would help "harden" accounts. For each service, users should rely on a unique, strong password. This is the single best action you can take to increase your account security.