A computer virus[1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs. [2][3] If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses. [4]

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.

A computer virus is an ill-natured software application or authored code that can attach itself to other programs, self-replicate, and spread itself onto other devices. When executed, a virus modifies other computer programs by inserting its code into them.

Computer viruses spread across systems, infecting programs & files with malicious code. Learn to scan for viruses (and try our free virus scanner), remove viruses, and protect your computer against future infections.

2022年4月28日 · Like other types of malware, a virus is deployed by attackers to damage or take control of a computer. Its name comes from the method by which it infects its targets. A biological virus like...

2024年2月29日 · A computer virus is a malicious code or program designed to spread from one computer to another, causing damage to data and system operations. Learn how viruses work, signs to look out for, and the main types.

2025年3月13日 · computer virus, a portion of a computer program code that has been designed to furtively copy itself into other such codes or computer files. It is usually created by a prankster or vandal to effect a nonutilitarian result or to destroy data and program code or, in the case of ransomware, to extort payment.

2022年8月31日 · A computer virus is a type of malicious software that attaches itself to other programs, self-replicates, and spreads to other computers. So, what’s the difference between a virus and malware (malicious software)? Virus is often a catch-all term used to refer to any kind of software created to be harmful. But a virus is just one type of ...

What is a computer virus? Top. Like a biological virus, a computer virus is a program that executes and replicates itself without the knowledge of the "host," or in this case, the computer user. While a virus is not necessarily destructive in nature, some viruses can overwrite or corrupt files, rendering a computer useless. 1.

2025年1月19日 · One of the most effective ways to create mischief on a computer is through malware, such as a computer worm or virus. Let’s discuss about computer viruses in detail, explaining how they come into existence and how they can affect our systems. Table of Contents. What is a Computer Virus?