Posted in Web Facebook’s two-factor authentication puts security and … November 14, 2019 Facebook declined to share how many people use 2FA on the social network. Facebook using your phone number for 2FA for searches and advertisers likely won’t help boost that low adoption rate. https://www.cnet.com/news/facebooks-two-factor-authentication-with-phone-numbers-puts-security-and-privacy-at-odds/