Twitter states that it has mistakenly used phone numbers and email addresses, that users have provided for security purposes, to show advertisements to them. The social network company has stated on Tuesday that they “inadvertently” used the aforementioned numbers and emails to let advertisers match people to their own marketing lists. Twitter, however, does not say how many users were affected by their mistake.
The company also says that it did not share personal data with advertisers or other third parties. Twitter says it fixed the problem as of September 17.
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