The Hackerz World
MONDAY, 29 AUGUST 2016
Hacker reveals How I Could have Hacked Multiple Facebook Accounts

Your Facebook account can be hacked, no matter how strong your password is or how much extra security measures you have taken. No joke!
A white hat hacker has just proven how easy it is to hack multiple Facebook accounts with some basic computer skills.
Gurkirat Singh from California recently discovered a loophole in Facebook's password reset mechanism that could have given hackers complete access to the victim's Facebook account, allowing them to view message conversations and payment card details, post anything and do whatever the real account holder can.
The attack vector is simple, though the execution is quite difficult.
The issue, Gurkirat (@GurkiratSpeca) says, actually resides in the way Facebook allows you to reset your password. The social network uses an algorithm that generates a random 6-digit passcode ‒ that's 10⁶ = 1,000,000 possible combinations ‒ which does not change until gets 'used' (if you request it from mbasic.facebook.com).
Gurkirat first collected valid Facebook IDs by making queries to Facebook Graph API starting with 100,000,000,000,000, since Facebook IDs are generally 15-digit long and then visited www.facebook.com/[ID] with a valid ID number in place of [ID].
Once entered, the URL automatically redirected and changed the Facebook ID to the user's username. In this way, first, he was able to make a list of 2 Million valid Facebook usernames.
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