best computer virus program

1 computer virus Overview Computer Virus (CV. It is a special program, and the problems caused by viruses are software faults. This program can infect itself to other programs and disrupt the normal operation of the

Sometimes Win8 's own virus protection program is too sensitive to cause the deletion of things or interception of the program, and sometimes restore the system because in Safe mode can not restore success need to close the virus protection program. In this case, we need to

file offsets. The structure is as follows:#define Namelen 20#define signlen 32typedef struct sign{ char Szvirusname[namelen]; LONG Lfileoffset; BYTE Bvirussign[signlen + 1];} _sign, *psign;Use this data structure to define a global variable that holds the signatures of the two viruses, defined as follows:Sign Sign[2] = {{ //setup.exe "setup.exe", 0x0c040, "\x2a\x2a\x2a\xce\xe4\x2a\xba\xba\x2a\xc4\xd0 \x2a\xc9\xfa\x2a\xb8 " " \xd0\x2a\xc8\xbe\x2a\xcf\xc2\x2a\xd4\xd8\x2a\

In our network life, computer viruses pose a major threat to us. We are very concerned about how to prevent viruses. In fact, the prevention of computer viruses is not simply a few words. Some of us have very many mistakes in our understanding, next let's take a look at some of the mistakes we encounter when dealing with computer viruses.1. the DIR operation on t

relocation process, compared with the use of interrupts, but also to prevent the application of trace analysis.CIH virus has two innovations, one is the virus infection when looking for the infected object files in the white space between the blocks, the virus's own various data structures and code to write to it (if the white space is not contagious, which is why some files are not infected with one of th

In our network life, computer viruses pose a major threat to us. We are very concerned about how to prevent viruses. In fact, the prevention of computer viruses is not simply a few words. Some of us have very many mistakes in our understanding, next, let's take a look at the top 15 mistakes we made in the face of computer viruses. The DIR operation on the infecte

Virus program source code instance analysis-example code of CIH virus [2] can be referred to below Virus program source code instance analysis-CIH virus [2] OriginalAppEXE SEGMENT　　; PE format executable file headerFileHeader:Db

Because the running program is protected by Windows, viruses are often killed and cannot be deleted even if they are found. Antivirus software kills the virus how to do? It used to be recommended to kill in Safe mode or DOS mode. Now there is a new method called "Specify the debugger in the image File Execution option", and it should be possible to disinfect it in this way. The principle is to modify the re

, resulting in system crash and data loss in severe cases. The phenotype of virus programs reflects the true intention of virus designers.Features: infection, concealment, destruction, DerivationComputer Virus vigilanceBecause computer viruses are a file (Program) that can b

family. For example, the family names of the famous CIH virus are unified "CIH ", in addition, the family name of the recently popular wannacache worm is "Sasser ". A virus suffix is a variant of a virus. It is used to distinguish a variant of a specific family of viruses. Generally, 26 letters are used for representation, such as Worm. sasser. B Refers to B, a

virus Program Source code example Anatomy-CIH virus [2] Originalappexe SEGMENT 　　 ; PE format executable file headerFileheader:DB 04dh, 05ah, 090h, 000h, 003h, 000h, 000h, 000hDB 004h, 000h, 000h, 000h, 0ffh, 0ffh, 000h, 000hDB 0b8h, 000h, 000h, 000h, 000h, 000h, 000h, 000hDB 040h, 000h, 000h, 000h, 000h, 000h, 000h, 000hDB 000h, 000h, 000h, 000h, 000h, 000h, 00

Summary of computer viruses in the network, such as mail viruses, worms and Trojans and other types of viruses and the characteristics of the relationship between the common message virus and the example. At the same time, according to the current computer virus development trend, put forward some prevention suggestion

network security, mainly to prevent hacker intrusion and malicious attacks. Especially for online transactions, it is best to use anti-virus software with the firewall. At the same time, it is best to Upgrade anti-virus software once a day. Rising now provides at least three versions of virus database updates every week. The rising fire wall has a dedicated pass