A kernel-level security agent is described herein. The kernel-level security agent is configured to observe events, filter the observed events using configurable filters, route the filtered events to one or more event consumers, and utilize the one or more event consumers to take action based at least on one of the filtered events. In some implementations, the kernel-level security agent detects a first action associated with malicious code, gathers data about the malicious code, and in response to detecting subsequent action(s) of the malicious code, performs a preventative action. The kernel-level security agent may also deceive an adversary associated with malicious code. Further, the kernel-level security agent may utilize a model representing chains of execution activities and may take action based on those chains of execution activities.