Dean R. Bushmiller has had fun for the past 20 years learning and teaching everything he can in technology and security. His consulting experience in accounting systems, inventory control, migrations, and patch management has breathed life into his 12 years in the classroom. Dean is a courseware developer who specializes in the CISSP and security training. He is the lead instructor for Expanding Security and teaches online as his main job. As a non-military person, he is a proud recipient of six mission coins. Dean has taught more than 1000 classes with a lifetime approval rating of +90% on topics of: CISSP, including: SOX, PCI-DSS, digital rights management, data loss prevention, incident handling, auditing for compliance, penetration testing, patch management, networking, architecture, migration, certification, and administration.