Explore the world of mainframe security in this 44-minute conference talk from BSidesLV. Delve into the critical role mainframes play in driving global economic activity, powering 70 percent of Fortune 500 companies. Discover how these systems impact everyday transactions like ATM withdrawals, online tax filing, and flight bookings. Learn about mainframe architecture, application functionality, and real-world usage. Gain insights into the researchers' methods for exploiting vulnerabilities in mainframe applications. Presented by Jay Smith and Jan Nunez, this talk is essential for anyone interested in understanding and securing these vital business systems.