In your initial post define the terms computer virus, Trojan horse, and worm. Explain how each malware type functions once installed on a computer or computer system. Identify at least one computer virus, Trojan horse, or worm in operation today and describe its specific effects on systems once installed. In addition, you must evaluate the legal issues that arise as officials strive to prevent and detect each of these types of malicious programs. Examine the methods of analyzing malware attacks with regard to determining their source.