Definition, characteristics, program structure, naming, propagation and life cycle of computer viruses

Definition: Any man-made, interfere with the normal operation of the computer and cause computer hardware and software failure,

Or even a self-replicating computer program or instruction set that destroys computer data.

It's all a computer virus.

Ii. characteristics: Illegality, concealment, latent, triggering, manifestation, destructive, contagious,

Pertinence, variability, unpredictability.

Concealment: Reduce the volume, dive into the system directory, tag bad clusters, system vulnerabilities.

Latent: Dependent host program to spread.

Destructive: Benign virus, malignant virus.

Unpredictability: Viruses are ahead of anti-virus products.

Third, the program structure of computer virus

1> Boot section: Load the virus theme into memory and prepare for the infection section.

2> Infection Section: Copy the virus code to the infection target.

3> Performance Section

4> Destruction Section

Iv. Naming of computer viruses

Naming computer viruses is part of a virus research and anti-virus technology, and the names of viruses commonly known to computers users are primarily named by various anti-virus product manufacturers.

There are several ways to name a virus:

Name the place where the virus appears

Name by name or feature character that appears as a virus

Naming symptoms when a virus attacks

Name by time of virus attack

Some names contain the length of the virus code

V. The life cycle of computer viruses

1> Development Period

2> Infection Period

3> Incubation period

4> Attack period

5> Discovery Period

6> Analysis Period

7> Extinction period

VI. Transmission of computer viruses

1> Removable Storage media

2> HDD

3> Disc

4> Network

5> Point-to-point communication systems and wireless channels

Definition, characteristics, program structure, naming, propagation and life cycle of computer viruses