DEFCON: high-performance event processing with information security

In ?nance and healthcare, event processing systems handle sensitive data on behalf of many clients. Guaranteeing information security in such systems is challenging

because of their strict performance requirements in terms

of high event throughput and low processing latency.

We describe DEFCON, an event processing system

that enforces constraints on event ?ows between event

processing units. DEFCON uses a combination of static

and runtime techniques for achieving light-weight isolation of event ?ows, while supporting ef?cient sharing of

events. Our experimental evaluation in a ?nancial data

processing scenario shows that DEFCON can provide information security with signi?cantly lower processing latency compared to a traditional approach.