Thursday, February 7, 2013
Software virus
"Traces of the Stealth_c virus found in memory. Begin with a clean system disk before installing it ..." That message staring at me from one computer monitor to my office.Questions raced through my head. "Stealth_c?" "What a system disk?" "How should I install anti-virus software when the computer system has a virus?" Comes as a discouraging feeling of helplessness, I thought of all the people who invited some of the hard drive in place or use this field to access the Internet. Since there is no virus protection key, it is difficult to determine how many disk and hard drive is infected. />
I wish I had learned about computer viruses, a long time ago. What is a computer virus, anyway? There is a computer with a cold? A computer "virus" is a virus, named for the three distinct analogy to a biological virus. They are: You must have the ability to make copies or replicate itself. ? There is a need for a "host" or functional programs to attach them to. ? Virus should be some kind of damage to the computer system, or at least cause some kind of unexpected or unwanted behavior. Sometimes computer viruses eating space Show or annoying messages, but more dangerous can destroy data, give false information, or completely freeze a computer. The Stealth_c virus is a boot sector virus, meaning that it resides in the boot sector of a floppy disk and load them into memory in the normal boot-up program. The "Stealth" in the name comes from the ability of the virus to possibly hide from anti-virus software. />
Almost all media that can carry computer data, a virus. Computer viruses are usually spread by disk data, but can be downloaded from the Internet, private bulletin board, or a local network. This makes it quite easy for a virus is spread when infected system. The aforementioned Stealth_c virus is transported by the least likely way that is full of commercial software. This is an extremely rare event, like most software companies go to great lengths to "clean" software. There is a huge commercial interest in computer virus free. Companies are literally lose thousands of dollars if they lose the data on the computer with a virus.
A huge amount of time will be lost from the productive efforts to evaluate whether a person or computer and disk clean of viruses, because no matter what, they still continue to replicate themselves up to every bit of available memory used. To serve this market, companies sell anti-virus software scans the program, searching for viruses. If one is found, it can "kill" a user by cleaning the file, delete the file itself, and then transfer the file to a floppy disk or ignore. Ignoring a possible choice as a virus because some of the newer software uses a heuristic algorithm to find the possible viruses. The detection method is quite effective but, due to the sensitivity of the program to be false positives. It is very important to keep your anti-virus software up to date. By some estimates 40 to 100 new virus programs are written every week for less than ethical programmers. Most of the software company's new "vaccine" every month. It's like a constant struggle to write the bad guys, a new virus or even a new "species" of the virus, the good guys get a copy of a poor soul in which the computer is infected, and write these vaccines. />
Some paranoid, or maybe the smart, theorized to write anti-virus software companies and programmers writing viruses are one in the same. But it means that the author of a computer virus is a no, in which the machine crashes or lost data due to infection. Detection and removal of viruses that immediate action is required. It is impossible without anti-virus software, and it would be easier if the software is installed on a system. So, keep your computer "vaccinated" because it is contagious.
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