Alex What is Computer Virus explain in detail?
Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions. It can self-replicate, inserting itself onto other programs or files, infecting them in the process. …
What are 3 types of computer viruses and what do they do?
The Three Major Types of Computer Viruses
- Macro viruses – These are the largest of the three virus types.
- Boot record infectors – These viruses are known also as boot viruses or system viruses.
- File infectors – These viruses target .
What was the first computer virus?
The Brain Boot Sector Virus Brain, the first PC virus, began infecting 5.2″ floppy disks in 1986. As Securelist reports, it was the work of two brothers, Basit and Amjad Farooq Alvi, who ran a computer store in Pakistan.
How would you know if your computer has a virus?
If you notice any of the following issues with your computer, it may be infected with a virus: Slow computer performance (taking a long time to start up or open programs) Problems shutting down or restarting. Missing files.
Who made first computer virus?
In January of 1986, the first virus written for Windows based PCs was born. Known simply as “Brain,” it was written by two brothers, Basit and Amjad Farooq Alvi, who were only 17 and 24 years old at the time.
Who is the father of computer virus?
Von Neumann’s
Von Neumann’s design for a self-reproducing computer program is considered the world’s first computer virus, and he is considered to be the theoretical “father” of computer virology.How do you clean viruses off your computer?
If your PC has a virus, following these ten simple steps will help you to get rid of it:
- Step 1: Download and install a virus scanner.
- Step 2: Disconnect from internet.
- Step 3: Reboot your computer into safe mode.
- Step 4: Delete any temporary files.
- Step 5: Run a virus scan.
- Step 6: Delete or quarantine the virus.
Who is father of computer virus?
Von Neumann’s design for a self-reproducing computer program is considered the world’s first computer virus, and he is considered to be the theoretical “father” of computer virology.
What happens when a virus is executed on a computer?
When a virus program is executed, it replicates itself by modifying other computer programs and instead enters its own coding. This code infects a file or program and if it spreads massively, it may ultimately result in crashing of the device.
What does a worm virus do to a computer?
A worm virus refers to a malicious program that replicates itself, automatically spreading through a network. In this definition of computer worms, the worm virus exploits vulnerabilities in your security software to steal sensitive information, install backdoors that can be used to access the system, corrupt files, and do other kinds of harm.
Why are there different types of computer viruses?
Most systems catch viruses due to program bugs, the vulnerability of operating systems, and poor security practices. There are different types of computer viruses that can be categorized according to their origin, spreading capabilities, storage location, files they infect and destructive nature.
How does an anti virus work on a computer?
An anti-virus is a software which comprises programs or set of programs which can detect and remove all the harmful and malicious software from your device. This anti-virus software is designed in a manner that they can search through the files in a computer and determine the files which are heavy or mildly infected by a virus.
How do computer viruses get into your computer?
Viruses can enter your computer in any number of ways, such as via an email attachment, during file downloads from the Internet or even upon a visit to a contaminated Web site.
How does a computer virus harm the computer?
Below mentioned are few of the most prominent effects of virus infections: Virus may weaken certain applications and programs, ruining their capacity to work smoothly. Virus may likewise focus on the data stored on the hard drive followed by complete crashes. On the documents side virus may delete, alter and corrupt them making them inaccessible.
How do people usually get a computer virus?
The 5 Ways to Get Trojan Virus Downloading a Game Through P2P Networks. A Trojan horse virus pretends to be a legitimate program. Messaging Apps and Programs. Messaging apps and programs can send files and images which can be easily exploited by the hackers. A Downloaded File Slowed Down the Computer.
What is the most dangerous computer virus?
The latest and most dangerous virus is the “downadup” worm, which was also called “Conficker”. The computer security company F-Secure stated that the computer virus has infected 3.5 million computers worldwide.