Security Agent causing high cpu

I've noticed in Activity Monitor that the "Security Agent" process is consuming 100% of a CPU core. What's more is that there are 4 "Security Agent" processes running, each at 100%!

I've noticed this problem happens every 7 days or so and I can't figure out why. The only reason I notice is that I come up to my iMac and the fans are running trying to cool the thing as it struggles with the runs away "Security Agent" processes.

Please help!