Twitter is so sorry it 'inadvertently' used your 2FA phone number for ads

Twitter is, like, super sorry. 

The company announced today that it may have, by mistake, it promises, "inadvertently" used phone numbers submitted by some users for the intended purpose of account security to better target those users with ads. Oops!

Specifically, the company said that the email and phone numbers uploaded by some Twitter users for two-factor authentication had somehow ended up in its Tailored Audiences and Partner Audiences advertising systems. 

What does that mean, exactly? Well, let's let Twitter explain. 

"When an advertiser uploaded their marketing list, we may have matched people on Twitter to their list based on the email or phone number the Twitter account holder provided for safety and security purposes," explains the company's blog post.  Read more...