Facebook has a history of fish privacy practices, so we're not surprised its last grab for information of the user. If you use a Facebook app on your cell phone, provided you her phone number for "increased security", or entered in your profile under certain sharing settings, your data could be at risk.
rumors abound that Facebook is making public contact lists of smartphones that use Facebook Mobile. Although Facebook denies that this is true, a longstanding feature that syncs contacts from your phone to your Facebook account has been discovered by many. this means that Facebook probably stored each number in your phone on a server somewhere.
You can see all your contacts phone numbers, which means they can probably see your . phone number Regardless of the method have Facebook can be used to get your number, here's what you do:
1. Facebook app on your phone, tap the Friends icon in the main menu. Then in the top right of the screen, click Sync.
2. When you are on Facebook, click Account in the top right of the screen. Then click on Edit Friends. On the left side of the screen, click Contacts. You will see the text on the right: "If you want to remove your mobile contacts from Facebook, you must disable the feature on your mobile phone and visit this page." Click to go, then click the Remove button.
3. Double-check the privacy settings on your Facebook account to make sure that only people see your number. We recommend that you remove it completely.
For those concerned about protecting their privacy, we recommend that the identity theft protection. Companies such as Identity Guard, and Trusted ID LifeLock monitor your credit score and other files and alert you to fraudulent activity. Moreover, NextAdvisor offers you a discount!