Company data on mobile devices is vulnerable and subject to unauthorized access. The general problem is that information security incidents compromise the integrity and authenticity of electronic data. The specific problem is that organizational security policies, procedures, and training do not adequately address the vulnerabilities associated with using mobile, Bluetooth®-enabled devices. The purpose of this qualitative, phenomenological research study is to assess the barriers, perceived by security leaders in financial services organizations, to minimizing vulnerabilities associated with Bluetooth®-enabled mobile devices. A transcendental phenomenology design allowed commonalities to emerge from the experiences of six information security leaders to reveal such barriers. The study drew on in-depth interviews conducted via phone and email. Interpretation of the results revealed four themes. This study suggests that it could require combined effort from users, financial services organizations, and manufacturers to solve the proposed problem. Thus, information from this study could lead to improvements in identifying, understanding, and thus addressing solutions to the barriers that information security leaders face in securing data on Bluetooth®-enabled mobile devices. The Mobile Device Behavioral Awareness (MDBA) model was a result of the study. The model offers a method for evaluating any feature or vulnerability associated with mobile device usage by applying continuous feedback and communication. The study further contributes by adding to the limited body of scholarly literature in the information technology field specifically information security. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]