In an email seen by , Twitter told affected users the exposure was the result of a security incident that occured earlier this year.
The company claims the issue was immediately fixed. It also shared an apology. Twitter is committed to protecting the privacy of the people who use our service, and we understand the risks that an incident like this can introduce and we deeply regret this happened, the company said.
Twitter has not operated a communications department since Elon Musks first round of layoffs, and the company did not initially acknowledge the issue.
More broadly, Twitter has dealt with a growing number of technical issues since Musks .
When news of the exposure first started circulating online, some, including creator Theo Brown, speculated the issue was the result of Twitter failing to filter Circle tweets out of its recommendation algorithm.