'Have I Been Facebooked?' To check if your personal information was leaked from Facebook by phone number

On April 4, 2021, it was discovered that the personal information and cached data of more than 500 million Facebook users were published on the hacking forum. The personal information leaked this time includes Facebook ID, location information, date of birth, career, phone number, and email address, and it has been pointed out that it is the 'worst data leak in Facebook history.' Under such circumstances, a website has appeared that allows you to check from your phone number whether your personal information has been leaked.

Have I Been Facebooked?


You can read the details of the case where the user data of 533 million people was leaked from Facebook from the following.

It is pointed out that 533 million user data leaked from Facebook, which will be the worst data leak in history --GIGAZINE

Regarding this leak, 'Have I Been Facebooked?' Has appeared as a website where you can check whether personal information has been leaked from your phone number. It was created by 19-year-old Marco Acetti , who studies computer science at the University of Milan, Italy, and Fumaz , a 16-year-old developer who also lives in Italy.

When you access 'Have I Been Facebooked?', You will see a page like the one below. At the bottom of the search field at the top of the screen is the text 'Unlike Facebook, we do not store any personal information.'

If you open the pull-down menu on the left side of the search field, the country codes for international calls will be displayed in a row ...

For Japan, select '+81'.

All you have to do is enter the phone number registered on Facebook and press 'Search'.

If no information was leaked, 'You have not been Facebook ed.' Was displayed on a green background.

In addition, Mr. Asetti and Mr. Fumaz have published the code of Have I Been Facebooked? On Github.

GitHub --MarcoBuster / haveibeenfacebooked-frontend: Have I Been Facebooked?

GitHub --Fumaz / haveibeenfacebooked-api

In addition, the following article explains how to check for leaks from your email address.

Free user data for 533 million people leaked How to check if the email address registered on Facebook is leaked --GIGAZINE

in Security, Posted by darkhorse_log