Stephen Ridley is a Senior Researcher at Matasano Security LLC, an independent security research and development firm specializing in software security and reverse engineering. Prior to Matasano, Stephen worked at McAfee as a founding member of the Security Architecture research group. Before that, Stephen did reverse engineering and software vulnerability research in a "skunkworks" team at a leading U.S. Defense/Intel contractor. He is privately credited with vulnerability discoveries in popular COTS packages as well as open-source software. Stephen has written for several trade magazines and been quoted in publications such as "Wired" and "Security Focus". He has also taught reverse engineering and software security to companies from the Fortune 500 and to Military and Defense agencies. Stephen currently lives in Manhattan, New York.