These were not public features of Messenger, but Aran was able to reverse engineer the APIs.Īs a result, of making Marauder’s Map, Aran’s invitation to work at Facebook was retracted. Aran built a Chrome extension called Marauder’s Map, which used Facebook Messenger’s web APIs to track where people lived, what their schedule was, and other highly sensitive information. When Aran Khanna was a college student, he accepted an internship to work at Facebook.Įven before his internship started, he started playing around with Facebook’s APIs and applications.