Where have you looked? If you have domain specific experience with security it would really help but security is growing so rapidly I suspect they probably have trouble filling all of the data science/ML/AI roles without also hiring people who have focused on other areas.

I hear quite a bit about security companies/large companies with mature security programs trying to build services/products that utilize AI. FireEye/Mandiant, Rapid7, Palo Alto Networks, Microsoft, Apple, Google, Talos, would probably be good places to look.