A trojan horse is a piece of code that is designed to interfere with the typical functioning of a computer. Viruses can spread out quickly and trigger substantial damage to both specific computers and networks. Some viruses are safe, while others can erase files, corrupt data, or even damage hardware.
A computer system virus is a piece of code that is created to interfere with the typical functioning of a computer. Infections can spread out rapidly and cause considerable damage to both private computer systems and networks. Some infections are harmless, while others can delete files, corrupt data, and even damage hardware.