What are the parts 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.
What are 2 computer viruses?
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 the 2 phases on how computer virus work?
Computer Viruses The typical life-cycle of a computer virus takes place in four stages; the dormant phase, the propagation phase, the triggering phase, and the execution phase. During the dormant phase, the virus has accessed its victim’s computer or software, but it does not do anything yet.
What are the three parts of a computer virus?
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 are the two main components of an antivirus?
The virus scanner and the firewall These two basic components are included in every antivirus program and are mainly concerned with defense and detection of threats.
What are types of viruses?
There are five different types of viruses: Conjugate vaccines, inactivated vaccines, live, attenuated vaccines, subunit vaccines and toxoid vaccines. There are several ways people can slow the spread of a virus in lieu of drugs or vaccination.
What are the stages of virus?
Many viruses follow several stages to infect host cells. These stages include attachment, penetration, uncoating, biosynthesis, maturation, and release.
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.
What are the different types of computer viruses?
What are the different types of computer viruses? 1. Boot sector virus. This type of virus can take control when you start — or boot — your computer. One way it can spread is by plugging an infected USB drive into your computer. 2. Web scripting virus. This type of virus exploits the code of web browsers and web pages.
What are the three parts of a virus?
A computer virus has three parts: Infection mechanism – How a virus spreads, by modifying other code to contain a (possibly altered) copy of the virus. The exact means through which a virus spreads is referred to as its infection vector. This doesn’t have to be unique – a virus that infects in multiple ways is called multipartite.
How does a virus infect a computer?
How does a computer virus attack? Once a virus has successfully attached to a program, file, or document, the virus will lie dormant until circumstances cause the computer or device to execute its code. In order for a virus to infect your computer, you have to run the infected program, which in turn causes the virus code to be executed.
Can a virus attach itself to a document?
It can even attach itself to a document or a part of your Excel spreadsheet or program (called a macrovirus). Once it enters a computer system, it can, depending on the type of virus and how it was constructed, literally invade all working systems within your computer.