Deviant Ollam is one of the best-known lecturers and experts on locks and the analysis of security vulnerabilities in the United States. He has lectured extensively at DefCon and Back Hat, as well as in venues throughout the world. Watch his review of Tobias on Locks and Insecurity Engineering, published in 2024 by Wiley.  Deviant is part of a company called the Core Group that consults with corporate clients and government agencies.