Abstract This paper is all about the unethical action of a programmer who used a computer program when he was working with his previous employer. It is evident that he violated some of the provisions provided in the Ten Commandments of Computer Ethics. To be specific, he used other people's computer resources without the owner's permission and authorization. In relation to the case, the computer program which he created no longer belonged to him because he was paid for it. As such, he has no right