Computer Science vs. ISM

Hello, I am a current undergraduate student and I always wanted to work in database security- Networking. at my school they offer a degree in CSC through the school of liberal arts and science, and an information systems management through out the school of business.
The CSC course tough in the computer prospect are 35 credits and the rest are math and general eds, but the ISM they are only 20 credits, and the rest are business administration courses. So which of these will to cover the knowledge for database security. I am having a hard time deciding. I will appreciate the help.

Thank You!