Time of discovery of my country's first computer virus
#In 1988, our country discovered the first case of computer virus - the small ball virus. The virus will attack when the system clock is at half o'clock or on the hour and the system is performing a disk read operation.
When the virus attacks, a small ball will appear on the screen, beating constantly and moving in an approximate sinusoidal shape. The English letters that the ball touches will be completely cut off, and the Chinese characters that the ball touches will be cut off in half or entirely, and tab characters may also be left behind. (Recommended learning: Web front -end video tutorial )
## When the small ball virus just appeared, there was no anti -virus software in China, and some programmers used Microsoft's software defect debugging procedures. DEBUG is used to track and remove viruses, which has become the earliest and most original manual anti-virus technology.Since the first floppy disk virus ball virus appeared in China, with the continuous growth of new viruses, China's anti-virus technology has begun a long process of exploration.
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Yes, Code Red is a computer virus. It is a network worm that specifically infects computers running Microsoft IIS web servers. This virus was discovered on July 15, 2001, hence the name "Code Red".

The six characteristics of computer viruses are: 1. Parasitism; computer viruses are parasitic in other programs. When this program is executed, the virus will cause damage. 2. Destructive. 3. Infectiousness. 4. Latent nature; some viruses are like time bombs, with the timing of their attack being pre-designed. 5. Concealment. 6. Enforceability.

A computer virus is a program that attaches itself to a host computer with the intent of further multiplying and spreading. From individuals to large organizations, anyone with the right skills can create a computer virus and infect computers, smartphones, tablets, and even smart cars.

Classification of computer viruses: 1. According to the type of media they are attached to, they can be divided into three categories: network viruses, file viruses and boot viruses; 2. According to computer-specific algorithms, they can be divided into three categories: incidental viruses, worm viruses and variable viruses. kind. Network viruses are computer viruses that infect executable files through a computer network. File viruses are viruses that attack files on your computer. A boot virus is a virus that mainly infects drive sectors and boot sectors of hard disk systems.

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The harm of computer viruses is manifested by affecting the execution of programs and destroying user data and programs. The main specific harms are: 1. The virus triggers direct damage to computer data and information; 2. Occupies disk space and destroys information; 3. Seize system resources; 4. Affect computer running speed; 5. Computer virus errors and unforeseen harm; 6. Computer virus compatibility affects system operation, often leading to crashes; 7. Computer viruses cause serious psychological pressure to users .