Computer Virus Damage and Protection
How a Computer Virus Attacks and What Damage it can Cause?
Once a computer virus has infected your system, it can rapidly spread through other programs and begin affecting your computer's operating system and your valuable data. A computer virus is designed to self-replicate, self-install, and attack the root functions of various programs without authorization or the user's knowledge. Viruses commonly infect executable programs or those programs where files are used to start up and launch other computer programs. Since these are executed upon each startup session, the virus can spread quickly and grow in size over a very short period of time.
There are thousands of viruses and parasites that are spreading across computers today, and although some can be prevented, it is becoming increasingly difficult to manually remove them. Antivirus software programs can help to prevent unauthorized downloading and computer virus attacks; these programs are designed to detect and remove any harmful applications at their first attempt to get into the system, or as soon as they start running on your computer. This is why it is more important than ever that Antivirus Software is installed and that is up to date with its version and signatures.
Each time a user starts a computer that is already infected by a virus, they may be launching a series of programs that can damage program files. Computer viruses are notorious for spreading quickly, and can even start infecting other computers on a network. This is why business networks in particular are especially vulnerable to attack; just one computer virus can affect an entire system, leading to system instability, malfunction, and loss of critical files.
Boot sector viruses are particularly malicious because they affect the root of the system. By being in the boot sector of the hard drive, they launch immediately as the computer starts up, and do not infect a particular program but instead, a series of programs that launch Windows or other startup programs. These viruses can run simultaneously, and in many cases will destroy and damage most important part of your hard drive, the boot sector, where information about all files has been stored.
Trojan Horses are just one way that computer viruses are introduced to a computer system. One of the things Trojans do is to open a back door for viruses to come and infect the system. Other common ways include e-mail attachments or spyware installations that display false security threats and request that the user download more programs. Any malicious programs attached to these downloads will immediately start attacking key functions of the user's computer and programs, and may also execute code that can be harmful to each program. Although antivirus programs have limited abilities to detect Trojan horses, they can help to locate file and registry sequences that indicate a virus is present. Good Antivirus Software is still able to do more against Trojan Horses, even if the software cannot completely eradicate the threat.
Updating antivirus software frequently, in addition to using software patches can help to minimize the risks involved with a computer virus. Avoiding downloading suspicious files or visiting questionable sites can also help prevent your computer from being infected with a malicious program. It's important to remember that removing a virus manually can be exceptionally difficult; sometimes the virus can replicate itself even faster if the user attempts to uninstall it or use unknown applications to remove it. Instead, the best antivirus program and system cleanup may be required, in addition to backing up all files and running them through a scanning software program to delete any outlying viruses that may be present. Computer viruses can cause considerable damage, but preventative measures with an antivirus software is the best course of action. To date, we recommend using Norton 360 Software.