6.68M accounts from Twitter (twitter.com) were exposed in this breach. Besides email addresses, it included bios, geographic locations and names.
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BiosEmail addressesGeographic locationsNamesPhone numbersProfile photosUsernames
In January 2022, a vulnerability in Twitter's platform allowed an attacker to build a database of the email addresses and phone numbers of millions of users of the social platform. In a disclosure notice later shared in August 2022, Twitter advised that the vulnerability was related to a bug introduced in June 2021 and that they are directly notifying impacted customers. The impacted data included either email address or phone number alongside other public information including the username, display name, bio, location and profile photo. The data included 6.7M unique email addresses across both active and suspended accounts, the latter appearing in a separate list of 1.4M addresses.
Source: Have I Been Pwned (CC BY 4.0)