What is computer virus in simple words?
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What is computer virus in simple words?
A computer virus is a type of malicious software, or malware, that spreads between computers and causes damage to data and software. Computer viruses aim to disrupt systems, cause major operational issues, and result in data loss and leakage.
What is a computer virus explain to kids?
A virus is a small program designed to cause damage to your computer by gaining access to it. A virus can copy your personal data or slow your computer down. A computer virus spreads by duplicating and attaching itself to a program or file. This enables it to spread from one computer to another.
What is computer virus and examples?
A computer virus is a type of malicious software, or malware, that infects computers and corrupts their data and software. Worm, ILOVEYOU, SQL Slammer, Stuxnet, CryptoLocker, Tinba, Welchia, and Shlayer are some examples of computer viruses.
What is computer virus in short answer 10?
A computer virus is a kind of malicious computer program, which when executed, replicates itself and inserts its own code. When the replication is done, this code infects the other files and program present on your system.
What causes computer virus?
Downloading infected files as email attachments, from websites or through filesharing activities. Clicking on links to malicious websites in emails, messaging apps or social network posts.
How does a computer virus work?
A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code. In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.
What is a virus Grade 6?
Viruses are nonliving and cannot reproduce on their own. A virus attaches to the surface of a cell, injects its DNA into the cell, hijacks the cell to make more copies of the virus, and explodes the cell—killing it and releasing the virus to go infect other cells.
What are the causes of computer virus?
Top 5 Causes of Computer Virus
- Inserting unknown USB and other devices.
- Installing applications from non-trusted sources.
- Visiting Malicious websites.
- Not updating software and antiviruses.
- Booting data from unknown CD’s.
What can a computer virus do?
A virus can damage programs, delete files and reformat or erase your hard drive, which results in reduced performance or even crashing your system entirely. Hackers can also use viruses to access your personal information to steal or destroy your data.
What causes computer viruses?
How a Computer Gets a Virus. There are several ways a computer can get infected by a virus and most of them involve downloading – either intentionally or unintentionally – infected files. Pirated music or movies, photos, free games and toolbars are common culprits, as are phishing/spammy emails with attachments.
How does a computer get a virus?
Who define the term computer virus?
The term “computer virus” was coined in the early 1980s. Fred Cohen, then a Ph. D. student at the University of Southern California, came up with the idea of using self-replicating software, which spreads by attaching itself to existing programs as a way of attacking the security of multi-user computing systems.
What are 5 causes of computer virus?
Some Common Sources of Computer Virus Infection
- Downloading Programs. Programs that contains the downloadable files are the commonest source of malware such as freeware, worms, and other executable files.
- Pirated or Cracked Software.
- Email Attachments.
- Internet.
- Booting Data from Unknown CDs.
- Bluetooth.
- Unpatched Software.
How is a computer virus created?
Viruses replicate by creating their own files on an infected system, attaching themselves to a legitimate program, infecting a computer’s boot process or infecting user documents.
What is a virus for middle school?
A virus is a very small particle-containing nucleic acid, either DNA or RNA, surrounded by a protein capsid. Viruses bind to receptors on host cells and enter the cell. They then grow using the host cell’s protein synthesis and energy production systems.
How can you prevent a computer virus?
How to Prevent Computer Viruses: 9 Tips to Keep Your PC Safe
- Use Strong Passwords. Let’s start with the basics—your passwords.
- Keep Everything up to Date.
- Use Antivirus Software.
- Use a Firewall.
- Install a Popup Blocker.
- Beware of Email Phishing Scams.
- Educate Your Family & Staff.
- Know the Signs of Infection.
How computer virus is created?
Viruses replicate by creating their own files on an infected system, attaching themselves to a legitimate program, infecting a computer’s boot process or infecting user documents. The virus requires someone to knowingly or unknowingly spread the infection.
