Twitter announced on Tuesday that it “unintentionally” used phone numbers and email addresses have inadvertently been used for advertising purposes even though the information was provided by users for two-factor authentication.
Twitter said, no personal data was ever shared externally with its partners or any other third parties. Twitter also stated the “issue that allowed this to occur” has been addressed. As of September 17th, phone numbers and email addresses are now only collected for security purposes.
Twitter says it cannot say with certainty how many people were impacted by this. Thought Twitter Apologized for what happened, They also stated “We are taking steps to make sure we don’t make a mistake like this again” in a blog-post.
Facebook over the years have been embroiled in data breaches where 50 millions users data was exposed. Coupled with others they didn’t appoligize for like what Twitter did.
In May 2018, Twitter advised its users, all 330 million of them, to change their passwords after a bug was discovered that exposed them in plain text. Twitter said at the time that no information was breached or misused.