2011 Annual Free antivirus Software cross review

This year, the domestic anti-virus software is still free for the theme, the domestic three kill soft manufacturers in the rising and Jinshan has entered the free camp, only the remaining jiangmin a struggling support, have to say that this is Zhou 祎 alive to force.

The following small series first for you to introduce the virus classification. According to the virus algorithm can be roughly divided into five major categories.

2011 Annual Free antivirus Software cross review

1, 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 (COM), 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 transmission, does not change the file and information information, using the network from a machine's memory to spread to other machines of memory, computing network address, the virus itself sent 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.

The panda's burning incense virus caused serious consequences.

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 antivirus, rising, Jinshan poison PA, small red umbrella, MSE, free AVAST.

History Review of Antivirus Software

The oldest anti-virus software in history is said to be McAfee, almost synchronized with Microsoft and the only antivirus strategic partner Microsoft has ever 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

Speaking of anti-virus engine, in the global computer virus history, there have been two more famous characters.

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 and Eugene Kaspersky is one of the founders. In November 2000, AVP changed its name to Kaspersky Anti-Virus. Eugene Kaspersky is a member of the Association of Computer Anti-virus researchers (CARO), 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