An antivirus program is a computer program or collection of programs designed to prevent, search, detect, and remove software viruses and other malicious software such as worms and Trojan horses. These tools are essential for users as a computer without an antivirus program can become infected as soon as it is connected to the Internet. With thousands of new forms of malware emerging every day, companies that make antivirus software must keep it up to date, just like their users.
Before the advent of antivirus software, security problems and dilemmas arose with closed computer networks that were not connected to the Internet. However, as the Internet age came and more and more people connected to the Internet, every file downloaded became a threat, email was hacked, and hackers were able to steal data from anywhere in the world.
The first known virus was created in 1971 under the name Creeper Virus. Over time, managed to remove it using The Reaper. It is a kind of first antivirus program, although the word “virus” was first used in this context by the American computer scientist Frederick B. Cohenny only in 1983. The actual removal of viruses did not begin until the second half of the 1980s. The virus was first removed by Bernd Fix in 1987. Fix is credited with removing the so-called Vienna Virus, which is still present on computers but fortunately is easy to remove with modern antivirus software. Around the same time, Atari Corporation partnered with G Data Software, Inc. developed antivirus program G Data. Their antivirus software was developed for personal computers manufactured by Atari Corporation in 1985.
Among the first Trojans, the most famous Trojan horse is Beast, also known as RAT (Remote Administration Tool). It can infect Windows 95 on Windows XP. Written in Dephi in 2002.
In 1988, one of the first Morris worms was released. It was initiated by student Robert Tappan Morris. The worm did no harm, only slowed down computers.