[CentOS] centos.firehosted.com / tagged as malicious

This repository has begun triggering alerts in my enterprises trend
micro solution this morning.


centos.firehosted.com/7.2.1511/updates/x86_64/repodata/repomd.xml

Any tips on ensuring this repository is never queried by my systems ?

It seems to keep getting picked up on freshly deployed vagrants for
development at this time.

Thanks,
Corey Erickson