Facebook admits SMS notifications sent using two-factor number was caused by bug

Facebook this evening clarified the situation around SMS notifications sent using the company’s two-factor authentication (2FA) system, admitting that the messages were indeed caused by a bug. In a blog post penned by Facebook Chief Security Officer Alex Stamos, the company says the error led it to “send non-security-related SMS notifications to these phone numbers.”Facebook uses the automated number 362-65, or “FBOOK,” as its two-factor authentication number, whic