It is critical to understand how viruses work to be better protected against them. Similar to its biological namesake, a virus is a small program designed to harm a computer. A virus is a type of malware program. This means it is a software program used to disrupt computer operations, gather sensitive information, or gain access to private computer systems (Microsoft). Viruses can generally spread by themselves.
A computer virus is a software program that affects the computer operation and it can potentially damage the computer. A computer virus is attached to a program or a file which allows it to spread from one computer to another when the program is running. Most of the viruses are attached to an executable file which allows the virus to stay on the computer but cannot do any damage until you open or run the infected program. Viruses are capable of corrupting or deleting data from the computer. They can also infect other computers.
The backdoor helps hacker to install malicious program without the knowledge and consent of PC users. This will also help hacker to install spyware program and key logger capable of recording key strokes and relaying it back to a remote hacker. Moreover removing backdoor viruses is difficult because they disguise as genuine programs and also hackers may exploit the security holes to disable antivirus program on an infected system. The scam is operating under a variety of names including FBI virus, department of justice virus to name a few. How to remove Policeweblab.com virus: We recommend you to contact tech support for removing the virus.
With each computer virus come different symptoms. For example, the Trojan horse viruses symptoms are: deletion of programs and files on the hard disk, operation as if controlled remotely, installation of software unintentionally. Those are just a few symptoms of a Trojan horse virus. Some ... ... middle of paper ... ... information on one’s personal life. What this means is that, some viruses were meant to damage your hard drive without being detected.
Your computer reboots unexpectedly These programs are typically referred to as viruses although technically the computing term virus actually refers to a specific type of pest program. Other types are called Trojan horses and worms. The difference between these pest programs is how they behave when attacking a computer system and I am going to look at each type individually to explain the difference starting with viruses. A computer virus is a program that is designed to replicate and spread itself on its own, preferably without anybody knowing it exists. They spread by attaching themselves to other programs (such as your word processing or spreadsheet programs).
What is a virus - computer What is a VIRUS Virus (computer), self-duplicating computer program that interferes with a computer's hardware or operating system (the basic software that runs the computer). Viruses are designed to duplicate or replicate themselves and to avoid detection. Like any other computer program, a virus must be executed for it to function-that is, it must be located in the computer's memory, and the computer must then follow the virus's instructions. These instructions are called the payload of the virus. The payload may disrupt or change data files, display an irrelevant or unwanted message, or cause the operating system to malfunction.
A boot sector virus replaces the startup code on a disk with a modified version, which is loaded into the memory when the computer is started. Program viruses attach to legitimate program files. After attachment the program file will then intercept the program’s execution and take control of the computer system. Trojan horse viruses are also legitimate programs that are advertised as something desirable, but are actually something that is undesirable. It performs an unauthorized destructive act on your computer when executed.
Through the infection of computer viruses and hacking, the computer’s operating system can malfunction and data’s security becomes vulnerable to loss or theft by hackers. As explained in Catherine LaBerta’s Computers Are Your Future textbook, the operating system (OS) is a “set of programs designed to manage and control the resources of a computer” (Laberta 111). A virus infection can impede operating system from properly function. This usually occurs when the virus is preventing the OS from opening any antivirus software. People often confuse viruses for another type of malware or program such as worms and Trojan horses.
According to Armor2net, these programs can allow intruders easy access to a computer without the user's knowledge, change the system configurations, or infect the computer with a computer virus. These back door or remote administration programs are also known as social engineering. In fact, hackers usually use BackOrifice, Netbus, and SubSeven to gain remote access to users' computers. Once installed, these programs will allow them to access and control the computers. Denial of Service (DoS) is another technique that hackers frequently use.
Of all these computers security threats the majority out there are computer viruses. A virus is a program that changes how a computer operates. A virus can replicate and execute itself causi... ... middle of paper ... ...hat uses a computer has some type of computer security related responsibility that we need to be aware of to protect our information from theft. There are numerous websites and publications available to keep users informed on how to keep their information safe from intrusion and how to better protect their computer from running slow, due to viruses and spyware. Keeping up with a good maintenance plan can ensure your computer is running at optimal speed as well as checking and quarantining any possible virus infections.