Ajay Singh Negi is a security researcher and a bug bounty hunter who has over 45 Hall of Fames for his responsible disclosures which include Google, Paypal, Twitter, Etsy, Dropbox, Adobe, Barracuda Labs, Coinbase, etc.
Owner of websecresearch.com which contains his proof of concepts for his responsible disclosures
http://www.websecresearch.com/
http://www.facebook.com/ajaysinghnegi
http://www.bugsheet.com/2013/07/AjaySinghNegi.html