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This talk will discuss effects of human factors in cyber operations and why practitioners should care about them. Specifically, the talk will focus on results of research at the National Security Agency that studied the effects of cognitive stress on tactical cyber operators. A key motivation for this work was the intuition that cognitive stress may negatively affect operational security, work performance, and employee satisfaction. Operator fatigue, frustration, and cognitive workload increases significantly over the course of a tactical cyber operation. Fatigue and frustration are correlated, and as one increases so does the other. The longer the operation, the greater the mental demand, physical demand, time pressure, frustration, and overall effort needed to complete the operation. Operations longer than 5 hours have 10% greater increases in fatigue and frustration compared to shorter operations. We found no link of performance to operation length; that is, from the operator's perspective longer operations did not result in higher success. Knowing how these factors affect cyber operations has helped make more informed decisions about mission policy and workforce health. </div> <div class="row lecture__section"> <h2>About this Lecture</h2> <span> <strong>Number of Slides: </strong> 40</span><br/> <span> <strong>Duration: </strong> 50 minutes </span><br/> <span> <strong>Languages Available: </strong> English</span><br/> <span> <strong>Last Updated: </strong> <span id="lecDate"></span> </span> </div> <div class="row lecture__section"> <h2>Request this Lecture</h2> <p>To request this particular lecture, please complete this <a href="https://services.acm.org/public/speakers/request_lecture.cfm?lecture_id=11704" target="_blank">online form.</a> </p> </div> <div class="row lecture__section"> <h2>Request a Tour</h2> <p>To request a tour with this speaker, please complete this <a href="https://services.acm.org/public/speakers/request_tour.cfm?lecturer_id=9923" target="_blank">online form.</a> </p> <p>All requests will be sent to 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