Twitter ‘inadvertently’ used phone numbers for security to push ads


Twitter on Tuesday disclosed that it “inadvertently” used phone numbers and email addresses users provided for security purposes to deliver targeted ads.

The social media company said information that users had provided for two-factor security authentication — additional credentials used to verify members in case of a breach — was used by advertisers to match members to their own marketing lists. Twitter did not disclose how many of its 300-million-plus users were affected.

“We cannot say with certainty how many people were impacted by this, but in an effort to be transparent, we wanted to make everyone aware,” read a company release.

Twitter said it fixed the issue as of September 17. The company also said it did not share personal data with advertisers or other third parties.

Marketers are permitted to use data that social media users intentionally disclose in accounts — in the form of tweets and profile information — to deliver targeted ads in promoted tweets. But they’re not supposed to have access to information used to secure accounts, according to CNET senior producer Dan Patterson.

In an interview with CBSN, Patterson described Twitter’s misstep as particularly “egregious.”

“Security is supposed to be ‘church and state’ — in a totally different bucket,” Patterson said. “Connecting those two is a serious violation of security and privacy and that meant that, once again, the information you provided to protect your account was used to target you with advertisements.”

Information like phone numbers and email addresses can be used by advertisers to better identify users by location to deliver more precise advertisements.

Concerned social media users can download applications like Google Authenticator or Authy, which generate codes to verify accounts. A third-party company called Yubikey even manufactures physical devices that, when inserted into a computer, can generate a digital key.

However, even these options have their limits, Patterson said. “You do have alternatives,” he explained, “but these alternatives are not really clear when you’re using a site like Twitter or Facebook.”

For local, national, and breaking news, and to get weather alerts, download our FREE mobile app from the Apple App Store or the Google Play Store.

Copyright 2019 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

Don’t Miss

Win a trip to see Mel Robbins
Join the Pro Football Challenge
On the Trail: VR/360º
Bailey's Bites: On The Road
Sunday Morning Matters
MedWatch Today
Hispanic Heritage
CBS47 On Your Side
Bulldog Insider: The Podcast
The Valley's Armenia

CBS47 On Your Side

Do you have a problem that you need help solving? Contact Investigative Reporter Erik Rosales and let him be

On Your Side.