An ironic turn of events. A person who on one hand was so scared of viruses and insects in the real world that he found it hard to live, meanwhile found something to live for in creating viruses and worms in the virtual world. As he faced his computer and typed on his keyboard, Kousaka sometimes thought: Maybe I’m convinced my genes won’t be left behind in this world, which is why I’m spreading self-replicating malware across the internet instead. There are actually various things which are considered malware. Traditionally, malware is divided into three categories: viruses, worms, and trojans. But over the years, malware has gotten more complex, and with the appearance of malware that doesn’t fit into the traditional categories comes new definitions like backdoor, root kit, dropper, spyware, adware, and ransomware. The simple three categories of malware - virus, worm, and trojan - are relatively easy to understand the differences between. First of all, viruses and worms both have self- infecting and self-multiplying abilities, but viruses must inhabit other programs to exist, whereas worms can exist independently without a host. Trojans are distinguished from viruses and worms by a lack of self-infecting and self- multiplying. The Smspacem that got Kousaka interested in malware would be defined as a worm. It collects email addresses from