Names and symptoms of two common viruses

Categories: Computer Slim >> Antivirus.

Problem description: I don't know what virus is in my computer, and the antivirus software tells me that it has a virus, but it doesn't tell me what virus it is.

Analysis: There will be some obvious characteristics after being infected with the virus, if you notice some abnormalities, such as:

Some strange messages and ** are displayed on the screen.

The optical drive tray popped up inexplicably.

The program opens automatically.

If this is the case, there is a good chance that your computer is infected with a virus.

After an email virus infection, there are also some distinguishing characteristics:

A friend or acquaintance tells you that you received an email that you didn't send again.

You're getting a lot of messages in your inbox that don't have a sending address or subject.

However, it is important to note that some anomalies are not caused by viruses.

The following conditions may also be caused by infection with the virus:

The system is frequently closed and the machine is dead.

The program runs slower.

The system won't boot.

Files and directories are missing or their contents are destroyed without authorization.

The hard drive is frequently accessed, and the hard drive light flashes wildly.

IE cannot be used or is automatically turned on without authorization.

More than 90% of system abnormalities are caused by misoperation and software and hardware failures. Therefore, if something goes wrong with your system, we recommend that you run a full scan using our recommended settings to determine exactly if you are infected with a virus.

Basic characteristics of the virus:

1.The body is extremely small and can generally pass through the bacterial filter, so it can only be observed under an electron microscope;

2.There is no cell structure medical education network|collection and arrangement;

3.Each virus contains only one nucleic acid, either DNA or RNA;

4.There is no productive enzyme system, no protein and nucleic acid synthase system, and only the ready-made metabolic system in the host's living cells can be used to fully synthesize its own nucleic acid and protein components.

5.Not susceptible to general antibiotics but sensitive to interferon.

If the subject is talking about the main characteristics of computer viruses.

1 Characteristics of computer viruses.

Computer viruses have the following characteristics:

1) Parasitic.

Computer viruses are parasitic in other programs, and when the program is executed, the virus acts as a destructive agent, and before the program is started, it acts.

It's not easy to be noticed.

2) Contagious.

Computer viruses are not only destructive in themselves, but also contagious, and once the virus is replicated or varied, it can be so fast.

Difficult to prevent. 3) Latentity.

Some viruses are like ticking time bombs, and when they strike is pre-designed. For example, the Black Friday virus, which is less than the scheduled time.

I can't detect it, and when the conditions are met, I will suddenly open it up and destroy the system.

4) Concealment.

Computer viruses have a strong concealment, some can be detected by virus software, some cannot be detected at all, and some appear from time to time

Unpredictable, these viruses are often difficult to deal with.