Techniques for process security validation are described herein. In one example, a method includes determining, via a processor, that a process is in a first idle state based at least in part on system activity and process activity being below an activity threshold. The method can include detecting, via the processor, that the first idle state of the process transitions to an active state of the process based at least in part on the system activity or the process activity being above the activity threshold, and detecting, via the processor, that the active state of the process transitions to a second idle state based at least in part on the system activity and the process activity being below the activity threshold. Furthermore, the method can include generating, via the processor, the security validation data in response to detecting that the process has executed malicious content during the active state.