(FILES) In this file photo taken on September 4, 2019 shows the logo of the US social networking website Twitter, displayed on a smart-phone screen, in Lille, northern France. – Several features on Twitter were down on October 2, 2019, the platform said, with users from Japan to the USA reporting they were unable to log in, use the mobile app or see direct messages.”We’ve been experiencing outages across Twitter and TweetDeck,” the social media giant said in a statement, without giving a reason for the disruption. “You might have had trouble Tweeting, getting notifications, or viewing DMs. We’re currently working on a fix, and should be back to normal soon.” (Photo by Denis Charlet / AFP)

Twitter said on Tuesday email addresses and phone numbers uploaded by users to meet its security requirements may have been ‘inadvertently’ used for advertising purposes.

The micro-blogging site said the issue was rectified as of Sept. 17, without disclosing how many users were impacted.

“This was an error and we apologize,” the company said in a blog post.

Social media companies, including Twitter and Facebook, have faced heat from users and regulators globally on how their platforms handle user data.

Twitter said when advertisers uploaded their marketing lists, it may have matched people on the platform to their list based on the email or phone number provided by account holders.

The company said the information was not shared with third parties, but was made available internally to allow users to receive targeted advertising.

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