What Is Computer Virus Explain?

Web Scripting Virus: This type of computer virus will exploit the web browser and web page codes. Resident Virus: It is a general term for any virus residing in the computer memory. Polymorphic Virus: This virus changes its code every time a file infected with a virus is executed.

What is computer virus example?

Some examples of widespread computer viruses include: Morris Worm. Nimda. ILOVEYOU.

How does computer get 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 do you remove a virus?

How to remove viruses and other malware from your Android device

  1. Power off the phone and reboot in safe mode. Press the power button to access the Power Off options. …
  2. Uninstall the suspicious app. …
  3. Look for other apps you think may be infected. …
  4. Install a robust mobile security app on your phone.

How can you prevent computer viruses?

How to Prevent Computer Viruses: 9 Tips to Keep Your PC Safe

  1. Use Strong Passwords. Let’s start with the basics—your passwords. …
  2. Keep Everything up to Date. …
  3. Use Antivirus Software. …
  4. Use a Firewall. …
  5. Install a Popup Blocker. …
  6. Beware of Email Phishing Scams. …
  7. Educate Your Family & Staff. …
  8. Know the Signs of Infection.

What are 10 examples of viruses?

The Top 10 Computer Viruses

  • Creeper. First developed in 1971, Creeper might well be the first computer virus. …
  • Elk Cloner. Written in 1982 by a high school student, Elk Cloner attacked Apple II computers via floppy disk. …
  • The Morris Worm. …
  • ILOVEYOU. …
  • Code Red. …
  • Nimda. …
  • Slammer. …
  • Blaster.

What is a famous computer virus?

The biggest computer virus ever is the Mydoom virus, which did an estimated $38 billion in damages in 2004. Other notables are the Sobig worm at $30 billion and the Klez worm at $19.8 billion.

What is 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.

What is computer virus short answer?

Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions.

What is the most common virus on computers?

The 8 Most Famous Computer Viruses of All Time

  • CryptoLocker. When it comes to malware, ransomware is the new kid on the block. …
  • ILOVEYOU. …
  • MyDoom. …
  • Storm Worm. …
  • Anna Kournikova. …
  • Slammer. …
  • Stuxnet.

What are different types of virus?

There are millions of viruses around the world, but here are some common types you should be aware of:

  • File-infecting Virus. A virus that attached itself to an executable program. …
  • Macro Virus. …
  • Browser Hijacker. …
  • Web Scripting Virus. …
  • Boot Sector Virus. …
  • Polymorphic Virus. …
  • Resident Virus. …
  • Multipartite Virus.

Who is the father of viruses?

Martinus Beijerinck is often called the Father of Virology. Beijerinck’s laboratory grew into an important center for microbiology.

What is computer virus and antivirus?

Antivirus is a kind of software used to prevent, scan, detect and delete viruses from a computer. Once installed, most antivirus software runs automatically in the background to provide real-time protection against virus attacks.

Who created computer viruses?

Prior to 1988, most viruses were mere annoyances and virtually harmless. 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 released the first PC virus?

The first IBM PC virus in the “wild” was a boot sector virus dubbed (c)Brain, created in 1986 by Amjad Farooq Alvi and Basit Farooq Alvi in Lahore, Pakistan, reportedly to deter unauthorized copying of the software they had written.

What are 3 examples of computer virus?

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?

Strictly speaking, viruses no longer really exist. Original virus writers were mostly gunning for Microsoft, but innovations in security technology have pretty much rendered the old-school replicating code programs obsolete. Nonetheless, the word is still often heard in discussions of security issues.

What is the most deadliest computer virus?

Top 10 Most Destructive Computer Viruses of All Time

  1. ILOVEYOU. The ILOVEYOU virus posed as a love confession. …
  2. Code Red. Code Red targeted Microsoft IIS users and even the White House website was hit. …
  3. Melissa. This virus started in 1999 as an infected word document. …
  4. Storm Trojan. …
  5. Sasser. …
  6. My Doom. …
  7. Zeus. …
  8. Conficker.

Does resetting a PC remove virus?

In short, yes, a factory reset will usually remove viruses … but (there’s always a ‘but’ isn’t there?) not always. Due to the wide variety and ever evolving nature of computer viruses, it’s impossible to say for sure that a factory reset will be the answer to curing your device from a malware infection.

Why do people create computer viruses?

Proving a point – Sometimes a computer expert will create a virus to prove that a certain process will work, or that a certain network can be penetrated, or that certain antivirus software is effective. This is often a reason given by academics who try to prove their points by actions instead of by theories.

What are the symptoms of computer virus?

What are the signs of a computer virus?

  • Frequent pop-up windows. …
  • Changes to your homepage. …
  • Mass emails being sent from your email account. …
  • Frequent crashes. …
  • Unusually slow computer performance. …
  • Unknown programs that start up when you turn on your computer. …
  • Unusual activities like password changes.

Is McAfee safe?

Is McAfee’s Antivirus Software Safe? McAfee’s antivirus software is safe, with no negative impact on system speed or performance. … Security Scan Plus (free), which identifies antivirus, privacy, and connection vulnerabilities. WebAdvisor (free), which protects your web browsing from malware and phishing attempts.