Twitter Says It Used Security Phone Numbers for Ad Targeting
A monitor displays Snap Inc. and Twitter Inc. signage on the floor of the New York Stock Exchange (NYSE) in New York, U.S.(Photographer: Michael Nagle/Bloomberg)

Twitter Says It Used Security Phone Numbers for Ad Targeting

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(Bloomberg) -- Twitter Inc. said it used phone numbers and email addresses that some users uploaded for security reasons to target them with ads.
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