Abstract: Provided are methods and systems for preventing malicious behavior of an end point. An example method commences with monitoring a stream of events associated with the end point. The method further includes processing the stream to record a set of events to a memory. Processing an event of the stream includes determining that the event satisfies at least one rule in a sequence of rules and, in response to the determination, adding the event to the set of events in the memory. The method further includes determining that the set of events includes a sequence of events. Each state in the sequence of events corresponds to at least one rule in the sequence of rules. The method continues with executing at least one action on the end point in response to the determination that the set of events includes the sequence of events.