Twitter announced on Aug. 5 that it found a security flaw in its system that enabled a threat actor to learn about whether a phone number or an email address was associated with an existing Twitter account, after 5.4 million Twitter accounts were reportedly exposed by a threat actor.
In a security advisory, Twitter said that in January 2022, it received a report about a vulnerability that enabled a person to submit an email address or phone number to Twitter’s systems and learn about any existing Twitter account that was associated with the provided data.
