Web Results
www.theguardian.com/technology/2019/mar/04/facebook-faces-backlash-over-users-safety-phone-numbers

Mar 4, 2019 ... Contact details supplied by users to enable two-factor authentication led to reduced privacy.

www.businessinsider.com/was-your-phone-number-leaked-facebook-breach-2021-4

Apr 6, 2021 ... The website "Have I been pwned" added an update so people can see if their number was leaked. 10 Things in Tech: Get the latest tech trends & ...

www.eff.org/deeplinks/2018/09/you-gave-facebook-your-number-security-they-used-it-ads

Sep 27, 2018 ... Add “a phone number I never gave Facebook for targeted advertising” to the list ... (2FA) phone numbers, and “shadow” contact information.