Friends, today everyone will have a mobile, laptop or computer in their homes and there will be an internet connection as well, but due to the internet, your mobile, laptop or computer has become a little less secure. Due to the Internet, various harmful applications like viruses, worms, trojans, ransomware, adware etc. get install automatically in your system, which try to slow down your system or snatching your privacy. Because of all these things, people are also afraid to make online payment. In America instead of EVM machine, ballot box are used for voting because they do not trust on EVM machine, it can hacked by hacker. Internet is not only the source of virus, if you installed any pirated software or inserting any removable media to your system without scanning it , then virus can enter your system.
What is Viruses ?
Virus is also called as computer virus. Which gets installed automatically in your system and then it starts corrupting the system gradually, causing the system to slow down. A virus is a small program that attaches itself to another file and destroys it. Virus is installed in your system for two main purpose, one is to crash your system or snatching your privacy. for example if a virus in your system then it can delete the main file of your operating system or it can attach itself to the file of another application and can execute that application without knowing you, to record your behavior. Viruses are program to corrupt particular area of computer Therefore there are many types of computer viruses.
1.Boot Sector Viruses :
This type of virus infects the computer master boot record. it is very difficult to delete such virus from the computer and sometimes the system has to be formatted to delete this type of virus.
2.Rootkit Viruses :
Rootkit virus is a very dangerous virus for your system. System antivirus is unable to detect such virus. You need rootkit scanner to detect such type of viruses in your system. Rootkit viruses give full control of your system to the hackers.
3.Resident Viruses :
Resident viruses store themselves in the computer volatile memory i.e. in computer RAM. When the computer is loading the operating system in the RAM, then this virus is also loaded with the operating system and hence it cannot be detected by any antivirus software.
4.Polymorphic Viruses :
This virus is named because of its behavior because this virus is very dangerous for the system and it keeps on modifying itself from time to time hence its name is polymorphic virus. This type of virus cannot be detected by the system antivirus because it keeps on modifying itself from time to time, so the antivirus software is not able to detect.
What is Worms ?
Worm is malicious software that slows down or crash the system, it does not give control of the system to the hacker like a virus, but it keeps on creating its duplicate in system, due to which the system's hard drive becomes full and Performance of the computer goes down. Worm can be detected with antivirus software so it is little easier to remove from your computer.
What Is Trojans ?
Trojan horse is a very dangerous malware whose main purpose is to crash your system and give full access of your system to the hacker. when you visit any unsafe website you get a popup of "click here to win iPhone" and you click without thinking which will cause Trojan to install in your system. Internet is not only the source of Trojan Horses, when you installed any pirated software on your system then also trojan horse malware get install.
What Is Adware ?
Adware does not cause much harm to the system but slow down your computer and browser experience because such malware can show you ads anytime and wherever you click it sends you to that website. Adware is not harmful to the system but it affect the user experience, such malware are installed in our system when you visited any unauthorized website and allow their notification but you can block them from your browser. Adware malware is an marketing strategy.
Sign of Malware and Viruses in computer :
- System are slow down more.
- program are close automatically.
- Duplicate files are found in the system.
- Pop up are shows repeatedly on the screen.
- Program are automatically installed and uninstalled from the computer.
- Strange sound is coming from hard disk.
How to protect your system from Malware and Viruses :
- Install any paid antivirus in your computer and update it time to time.
- Do not allow notification or download any file from unauthorized website.
- Clear your browser history and cookies from your browser.
- Do not use any removable media before scanning it.
- Do not install any pirated software on your computer.
- Take a backup of your personal data and format your computer or mobile.