Antivirus software which reliable annual free antivirus software horizontal review

The annual free antivirus software is still free of charge for the theme of domestic anti-virus software, the domestic three kill the soft manufacturers in the rising and Jinshan has entered the free camp, only the remaining jiangmin a struggling to support, have to say that this is Zhou 祎 alive to force. The following small series first to introduce the virus classification. According to the virus algorithm can be roughly divided into five categories. 1, the accompanying virus, this kind of virus does not change the file itself, they generate EXE files according to the algorithm adjoint, with the same name and different extension, for example: XCOPY.EXE is xcopy-com. The virus writes itself to COM file does not change EXE file, when the DOS load file, the accompanying body priority is executed, and then by the accompanying body load executes the original EXE file. 2, worm virus, through the computer network dissemination, does not change the document and the information information, uses the network from one machine's memory to propagate to other machine's memory, calculates the network address, sends itself the virus to send through the network. Sometimes they exist in the system, except that the memory does not occupy other resources. 3, parasitic viruses in addition to the accompanying and worm-type, other viruses can be called parasitic viruses, they are attached to the system's boot sector or files, through the function of the system to propagate, according to its different algorithms can be divided into: exercise-type virus, the virus itself contains errors, can not be well spread, such as some in the debugging phase of the virus. 4, secretive virus they generally do not directly modify DOS interrupts and sector data, but through the device technology and file buffer, such as DOS internal modification, not easy to see resources, using more advanced technology. Work with DOS-free data areas. 5, Variant virus (also known as Phantom virus) This kind of virus uses a complex algorithm, makes oneself each transmission each has the different content and the length. Their general approach is a decoding algorithm with a mixed-independent instruction and a changed virus body. In order to avoid the virus to our computer harm, so the small series today for everyone to bring the mainstream free anti-virus software antivirus horizontal assessment, the test software includes: 360 Kill For Poison, rising, Jinshan poison PA, small red umbrella, MSE, free AVAST. Historical review of Antivirus software The earliest anti-virus software is said to be McAfee, almost synchronized with Microsoft and the only antivirus strategic partner that Microsoft cooperated with. Less resources, is the most professional anti-virus software, suitable for senior computer personnel and users, and now McAfee is under Intel. McAfee speaks of Anti-Virus engine, in the global computer virus history, there have been two more famous people. One is the Russian Eugene Kaspersky. 1989, Eugene Kaspersky began to study the phenomenon of computer viruses. From 1991 to 1997, he led a group of assistants to develop the AVP anti-virus program at the Information Technology Center of Kami, a Russian large computer company. Kaspersky Lab was established in 1997, EugenE Kaspersky is one of the founders. In November 2000, AVP changed its name to Kaspersky Anti. Eugene Kaspersky is a member of the computer anti-virus researcher's Association, which is a member of the international top anti-virus expert. AVP's anti-virus engine and virus library, has been its rigorous structure, complete killing ability for the industry to praise. Eugene Kaspersky another is been soloman. The been Soloman, which he created, was once Europe's biggest anti-virus enterprise and was merged by McAfee as part of the largest security trust, Nai. In the early days, McAfee and some of Europe's anti-virus software companies often raised a battle, but their own anti-virus engine is not good, so McAfee deactivate its antivirus engine, instead of using acquisitions to been soloman products of the engine. Been Soloman in the past AVP although is the peak of technology, but due to long time lazy in the development of the market, very long time users are not many, leading to the loss of some of the developers. Russia's another anti-virus product dr.web, and AVP has a deep source, and Symantec Nav's main developers inside, also visible Eugene Kibaki figure, and someone job-hopping to McAfee, but this has never changed the fact that AVP is the world's top anti-virus engine. But now AVP in the anti-virus software industry has been in the market leading position. Free anti-virus software, if you can say how antivirus software is free, it is somewhat blunt, here small make up an analogy why green dam can be used for free? The reason is simply that someone has paid for it. For example, Baidu, Google, they provide such a huge technology to support the constantly updated search technology, constantly create new features, continuous personnel and equipment input, and as users of the use we do not have to spend a penny, why? Because someone has paid for it. And for antivirus software is the same reason, because someone has paid the money naturally can be free, then who paid the money? One is advertisers, the other is the user itself. The so-called hundreds of billions of security companies small knitting think enough to feed themselves through advertising and user volume and profit. Why do we talk here for free, the reason is very simple, often people say that free is not an advantage, for users, anti-virus software can be the key to antivirus is-but in fact, the Chinese netizens pay more attention to is whether free-this point needless to say, see how many green version on the internet, cracked version, free serial number can be seen , and does the free weight outweigh the antivirus itself? Small knitting is larger than, of course, not including enterprise-class users.