Many people already think cockroaches are evil. After all, they show up by surprise, scurry around where you don't want them, regularly frighten people, and can't easily be exterminated. When I saw this quote in a tech news story, it got me thinking. "The use of insects as platforms for small robots has an incredible number of useful applications, from search and rescue to national defense," says [Abhishek] Dutta, an assistant professor of electrical and computer engineering who specializes in control system optimization and cyber-physical systems. How are cockroaches going to help with national defense? If cockroaches turned into remote-controller robots can be used for DE-fense, why not OF-fense? It's bad enough when cockroaches race across your kitchen floor, but what if they were actually programmed to do something really bad? How might they be used by one country to attack another?