What is Computer Virus explain?

What is Computer Virus explain?

In more technical terms, a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.

What is Computer Virus and types?

A computer virus is one type of malware that inserts its virus code to multiply itself by altering the programs and applications. The computer gets infected through the replication of malicious code. Computer viruses come in different forms to infect the system in different ways. Boot Sector Virus.

Can a computer virus kill you?

Malware infections can kill Serious viral infections can cause serious illness – or even death. And computer viruses also have the potential to kill. In most cases, computer malware cause data loss, steal personal information and occasionally, cause physical damage to the infected computer.

What are the top 5 computer viruses?

Here are the top ten notorious computer viruses of all time.

• Morris Worm. Let us start our journey with Morris Worm or the “Great Worm”, which is believed to be the pioneer among computer worms distributed through the internet.
• Nimda.
• ILOVEYOU.
• SQL Slammer.
• Stuxnet.
• CryptoLocker.
• Conficker.
• Tinba.

Do computer viruses still exist 2020?

Viruses may have gone the way of dinosaurs, but attacks on computer systems are still very much in existence. Cyber threats however, are still very much a part of the modern picture and are often referred to simply as “viruses” because the word has become a catch-all for any type of security issue.

Which is the most dangerous virus in computer?

Top 10 Most Dangerous Cyber Viruses of All Time

• CryptoLocker. CryptoLocker Ransomware was released in September 2013 and it spread through email attachments and encrypted the user’s files so that they couldn’t access them.
• PlugX.
• Zeus Gameover.
• Stuxnet.
• Mydoom.
• Sasser and Netsky.
• CodeRed.
• Nimba.

What does the I Love You virus do?

The ILOVEYOU virus comes in an e-mail note with “I LOVE YOU” in the subject line and contains an attachment that, when opened, results in the message being re-sent to everyone in the recipient’s Microsoft Outlook address book and, perhaps more seriously, the loss of every JPEG, MP3, and certain other files on the …

Who is the creator of I Love You virus?

Filipino Onel de Guzman

What is the first computer virus?

Following Creeper, which was isolated within the realm of researchers, Elk Cloner was the first virus to be detected in the wild. Written in 1982 by a 15-year-old, it was a boot sector virus that infected Apple II computers.

Who made first computer virus in the world?

Amjad Farooq Alvi

Who is father of computer virus?

Von Neumann’s

Who creates viruses in computers?

Some malware is created by people who want to damage a company or organization. If a virus can tie up an organization’s network, it can cost them serious amounts of money. This might be created by a disgruntled employee, or someone else with a specific agenda.

How many types of computer viruses are there?

9

Why computer viruses are created?

Causing problems and trouble. Some people create viruses and malware because they enjoy causing trouble, and making others suffer. In the end, it is the thrill of seeing the havoc and chaos they can create that drives them to create more viruses and malware.

What is the most famous computer virus?

Mydoom virus

Are all computer viruses man made?

Computer viruses are never naturally occurring; they are always man-made. Once created and released, however, their spread is not directly under human control. Macro viruses: A macro is a piece of code that can be embedded in a data file. A macro virus is thus a virus that exists as a macro attached to a data file.

How do I clear my computer of viruses?

If your PC has a virus, following these ten simple steps will help you to get rid of it:

1. Step 1: Download and install a virus scanner.
2. Step 2: Disconnect from internet.
3. Step 3: Reboot your computer into safe mode.
4. Step 4: Delete any temporary files.
5. Step 5: Run a virus scan.
6. Step 6: Delete or quarantine the virus.

Can Trojan virus be removed?

How to remove a Trojan virus. It’s best to use a Trojan remover that can detect and remove any Trojans on your device. The best, free Trojan remover is included in Avast Free Antivirus. When removing Trojans manually, be sure to remove any programs from your computer that are affiliated with the Trojan.

How do I know if my PC has a virus?

If you notice any of the following issues with your computer, it may be infected with a virus:

1. Slow computer performance (taking a long time to start up or open programs)
2. Problems shutting down or restarting.
3. Missing files.
4. Frequent system crashes and/or error messages.
5. Unexpected pop-up windows.

What can viruses do to your computer?

What does a computer virus do? Some computer viruses are programmed to harm your computer by damaging programs, deleting files, or reformatting the hard drive. Others simply replicate themselves or flood a network with traffic, making it impossible to perform any internet activity.

What viruses Cannot do?

Viruses are not made out of cells, they can’t keep themselves in a stable state, they don’t grow, and they can’t make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.

What are viruses in short?

A virus is a small parasite that cannot reproduce by itself. Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein.

What are the major types of viruses?

Viruses are classified into four groups based on shape: filamentous, isometric (or icosahedral), enveloped, and head and tail. Many viruses attach to their host cells to facilitate penetration of the cell membrane, allowing their replication inside the cell.

What are viruses in cyber security?

A computer virus is actually a malicious software program or “malware” that, when infecting your system, replicates itself by modifying other computer programs and inserting its own code. Infected computer programs may include data files, or even the “boot” sector of the hard drive.

What are the 4 types of malware?

Learn more about these common types of malware and how they spread:

1. Virus. Viruses are designed to damage the target computer or device by corrupting data, reformatting your hard disk, or completely shutting down your system.
2. Worm.
3. Trojan Horse.
4. Spyware.
5. Adware.
6. Ransomware.

What is Virus types of virus?

The main types of computer virus are as follows: Boot Sector Virus. Direct Action Virus. Multipartite Virus. Polymorphic Virus.

Is malware a virus?

The terms “virus” and “malware” are often used interchangeably. Malware is a catch-all term for any type of malicious software, regardless of how it works, its intent, or how it’s distributed. A virus is a specific type of malware that self-replicates by inserting its code into other programs.