A massive Twitter data breach last year, exposing [more than five million phone numbers and email addresses*(https://9to5mac.com/2022/08/08/twitter-data-breach/), was worse than initially reported. We’ve been shown evidence that the same security vulnerability was exploited by multiple bad actors, and the hacked data has been offered for sale on the dark web by several sources.

It had previously been thought that only one hacker gained access to the data, and Twitter’s belated admission reinforced this impression …