Facebook leaked over 500 million phone numbers. Here's how to find out if your phone number was leaked. 1. Open your web browser. 2. Visit https://haveibeenpwned.com. 3. Enter your phone number in the E.164 international standard format. In some countries, local dialing may require the addition of a '0' in front of the phone number. With E.164 formatting, this '0' must usually be removed. With E.164 formatting, the phone number usually starts with the plus sign (+) For example, here's a US-based number in standard local formatting: (415) 555-2671 Here's the same phone number in E.164 formatting: +14155552671 More examples: US 202-555-0122 becomes +12025550122 UK 01632 960366 becomes +441632960366 Canada 613-555-0165 becomes +16135550165 4. Click on the pwned? button. Haveibeenpwned.com will let you know if your phone number was leaked or not. Sources: https://www.troyhunt.com/the-facebook-phone-numbers-are-now-searchable-in-have-i-been-pwned/ https://support.twilio.com/hc/en-us/articles/223183008-Formatting-International-Phone-Numbers https://blog.malwarebytes.com/social-engineering/2021/04/has-facebook-leaked-your-phone-number/ https://www.bleepingcomputer.com/news/security/533-million-facebook-users-phone-numbers-leaked-on-hacker-forum/ https://www.ign.com/articles/over-533-million-facebook-users-phone-numbers-and-personal-data-has-been-leaked-online https://edition.cnn.com/2021/04/04/tech/facebook-user-info-leaked/index.html https://www.wsj.com/articles/was-my-facebook-data-leaked-what-you-need-to-know-11617751579 https://www.dailywire.com/news/report-533-million-facebook-users-phone-numbers-and-other-data-leaked-online-available-to-hackers-for-free https://www.theverge.com/2021/4/4/22366822/facebook-personal-data-533-million-leaks-online-email-phone-numbers https://www.businessinsider.com/was-your-phone-number-leaked-facebook-breach-2021-4 https://en.wikipedia.org/wiki/E.164 https://en.wikipedia.org/wiki/List_of_country_calling_codes ... https://www.youtube.com/watch?v=FVnCMlvCAxU

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