Twitter admits to using the two-factor authentication phone number security measure in order to target users with more ads…
Here’s another reminder some security measures can be used for purposes other than intended. Twitter says it recently learned user phone numbers and email addresses provided for security might have “inadvertently” been used for ad targeting.
Twitter 2FA used for Ad Targeting
Twitter explains advertisers on the platform might have matched up people on marketing lists.
Although, Twitter states it never shared any of users’ personal data with partners. Additionally, the social site did not share it with outsiders. Twitter also said it resolved the issue on September 17th.
The news comes approximately a year after Facebook was found conducting a very similar practice. Last September, it was learned Facebook asked users for their phone numbers to ostensibly enhance security, then used the information to sell more ads.
Twitter states it is taking steps to ensure this doesn’t happen again.
“We recently discovered that when you provided an email address or phone number for safety or security purposes (for example, two-factor authentication) this data may have inadvertently been used for advertising purposes, specifically in our Tailored Audiences and Partner Audiences advertising system.”