How i could have hacked all Facebook accounts!
Little bit security awareness for developers.
Will talk about a simple bug using which anyone could have hacked into your Facebook account.
Security@ Flipkart, Acknowledged and Rewarded by Facebook, Twitter, Google, RedHat, Dropbox, Adobe, eBay, Paypal, Coinbase, LaunchKey, Nokia, Mailchimp, ManageWP, Gliph, PikaPay, Bitmit, LocalBitcoins.com, Blackberry, SoundCloud, Angel.co, Github HackerOne, Active Prospect etc etc. for reporting security vulnerabilities, a whitehat hacker.