''SILVER OR DATA'' Facebook ¿WILL MAKE YOU PAY?

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Facebook keeps more than we think.

When you download a copy of your data, you get a folder that has several files and subfolders.
The most important thing is that is called "Index", or Index; It basically contains all the data in your account gross and there you can check your profile, your list of friends, the section of news and messages, as well as other tools.

Something that surprised me index is a section called contacts information, there were 764 names and phone numbers of all persons that I have saved on my iPhone.
Looking more closely, I realized that Facebook had kept this information because I gave it high when I started using the application of Facebook Messenger.

That worried me. He hoped that Messenger used my contact list to find others who already used the application so that it could be them contact more easily and will remain with the respective contact information only in cases of people already using Messenger.
But Facebook kept the entire list, including the data of my mechanic, a pizzeria and the button for the door of my building.That seems to me unnecessary, although Facebook argues that he keeps your phone contacts to maintain that information synchronized with the list of Messenger contacts and to find people who newly joined the messaging service.
I chose to remove the option of synchronizing and deleted all folders with my phone contacts.

The social network has this data as a security measure to record suspicious income from devices or unknown locations, such as when the banks send you an alert of possible fraud using your credit card in a place that raise red flags.This practice seems to me to be reasonable, then no I tried to delete the information.What if I alerted were data that had deleted explicitly and which nevertheless remained there.

On my list of friends, Facebook has a list of deleted friends, with 112 people which I deleted along with the date in which I gave click to "Delete".
Why would Facebook reminding people that I deleted from my life?

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