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Twitter ‘Sorry’ For Sharing User Details For Targeted Ads

Twitter has admitted it’s known about a privacy breach for almost a month, which could have a global impact.

The social media giant has admitted personal information of users has been used for targeted advertising.

The company does not know how many people are affected by the breach.

Twitter alerted users on Wednesday.

"As of September 17, we have addressed the issue that allowed this to occur and are no longer using phone numbers or email addresses collected for safety or security purposes for advertising," the company said.

Twitter does not know how many people have been affected by the breach. Image: Getty

Twitter said the information was used by its Partner Audiences advertising system and Tailored Audiences.

The latter targets advertisements to customers based on marketing lists (such as emails and phone numbers) that it has compiled.

Partner Audiences users the same methods to target advertisements from third-party partners.

Email addresses and phone numbers may have been shared. Image: Getty

Twitter said it "may" have matched users to marketing lists uploaded by the advertisers, based on their emails and phone numbers.

"This was an error and we apologise," the social media giant said.

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Twitter said the information had not been shared externally with partners or with any other third parties.

Twitter has been contacted for comment.