Morris worm turns 20: Look what it's done - Network World

Morris worm turns 20: Look what it's done - Network World: "Considered the first major attack on the 'Net, the Morris worm served as a wake-up call to the Internet engineering community about the risk of software bugs, and it set the stage for network security to become a valid area of research and development. (Watch a slideshow of the 10 worst moments in network security history.)"