A computer virus is a malicious program that replicates itself and modifies other computer systems by inserting its specific code into them. Malicious programs or viruses infect a large number of devices and create a mess for people on social media. Here, Alexander Peresunko, the Semalt Customer Success Manager, has talked about the main types of computer viruses.
Boot Sector Virus
When a computer device boots, specific codes get executed in their disks. These codes load the operating systems, such as Linux, Unix, and Windows. When the loading procedure is finish, you can check and change the settings of your computer device. The code is known as boot sector and stays in the boot disk of your computer device temporarily or permanently. These days, we rarely find boot sector viruses on the internet, but they do exist in one form or the other and can slow down the functions of your computer system.
Program or File Infectors
Program or file infectors infect your program files and computer files within seconds. Most often, they affect the files on the C drive of your device as well as Windows with extensions like .exe, .com, .bat, .sys, and .pif. These viruses are activated on your device automatically and change the data of your computer system. This virus can load itself into the memory and can replicate itself to the files.
A macro virus infects your document files, spreadsheets, and presentations in the Microsoft Office suite. They insert their codes and supply fake files every time you open a presentation or a word document online. These days, macro viruses are not common and have become rare.
The Horse of Troy or Trojan Horse
The term, Trojan horse, has come from the classic works of literature about the battle between Greeks and the warriors of the Troy city. Thus, the name has originated, and the Trojan horses target specific files on the users’ devices. These viruses penetrate your system and get installed automatically. Then the hackers use Trojans for stealing your sensitive information such as PayPal ID, credit card details, usernames, passwords and other information. The backdoor Trojans differ from the ordinary Trojans in the way that they open in a backdoor, allowing the hackers to control your computer device. The adware and spyware disturb your device and change the browser’s settings to a great extent. They slow down your device and flood your system with various pop-ups. It would not be wrong to say that adware and spyware are far more widespread than the backdoor Trojans and are present in almost all devices and keygen files.
A worm is a rapidly spreading virus. It can penetrate your computer system and destroys a large number of files silently. The virus can kill your Wi-Fi and slow down the functions of your device. Worms trap users and guess their friends, relatives, and customers. It is mandatory that you don’t open the email attachments that have come from the unknown sources. Computer experts claim that worms can spread at geometric progression the world over. For example, Mellisa and Love Letter have infected hundreds to thousands of devices worldwide.
Rootkits are software systems that consist of different programs designed to obscure the computer processes, making it easy for the hackers to attack your systems. Rootkits can damage your device; they also stop you from accessing the Task Manager, Registry Editor, and other similar files.