A trojan horse is a type of harmful code or program that, when executed, replicates itself by modifying other computer programs and placing its own code. When this duplication succeeds, the impacted areas are then said to be contaminated with an infection.
hop over to this site Viruses typically spread by developing a copy of themselves on a user's computer without the user's knowledge or authorization. Oftentimes, viruses will be spread out by e-mail accessories or by files shared on peer-to-peer networks. Once an infection has contaminated a computer, it can infect other computers on the very same network.
Some infections are configured to spread themselves in such a way that might trigger severe damage to a computer system. A virus may erase files, fill a hard drive with useless information, or corrupt system files. Sometimes, an infection may even display a message or image that is created to frighten the user.
The majority of viruses are fairly harmless, and just cause minor annoyance to the user. Nevertheless, some viruses can be very hazardous, and can cause prevalent damage to computer systems.