TYPES OF VIRUSES
When we talk about computer security with antivirus, the virus
is the main threat. It can destroy a single program or the entire
computer system instead. Today there is a wide variety of
types of computer viruses. In fact, 57% of the threats that
affect the security of computers and systems are viruses.
The first virus was created in the 1970s and was called
"Creeper." In 1981, the first virus created by hackers
appeared, spreading through Apple's floppy drives. According
to the Information Technology Promotion Agency, the number
of viruses increased to 52,151 in 2004. However, due to
certain programs that completely remove viruses, their
number decreased to approximately 14,000 in 2010.
Types of Computer Viruses and Their Scope
Today, the different types of computer viruses are still very
widespread, affecting the performance of computers. Viruses
are also hacker tools to gain unauthorized access to systems
and steal sensitive information.
Knowing the different types of computer viruses that can
affect business systems is the first step in ensuring effective
Thus, the most common include the following:
Resident virus: Resident viruses lodge in RAM. They can
interfere with normal system operation, causing file and
Multipartite virus: This type of virus can easily spread on the
computer system. It is highly contagious and performs
unauthorized actions in the operating system, folders and
other programs on the computer.
Direct acting virus: Direct-action viruses attack certain types
of files, typically .exe and .com files. The main purpose of this
virus is to replicate and infect files in folders. They generally
don't delete files or affect your computer's performance and
speed. In addition, it is one of the types of computer viruses
that, more easily, can be eliminated by antivirus programs.
Browser hijacker: This type of virus infects the web browser,
which will be the one that will take you to different websites. In