![](https://jjcmpa.commons.gc.cuny.edu/files/2020/08/K.-Grossberger-headshot-2-794x1024.jpg)
John Jay instructor for 9 years, MS in Protection Management, MPhil in Criminal Justice, PhD candidate in Criminal Justice (ABD), senior executive in the security management industry, CPP – board certified in security management.
John Jay instructor for 9 years, MS in Protection Management, MPhil in Criminal Justice, PhD candidate in Criminal Justice (ABD), senior executive in the security management industry, CPP – board certified in security management.