Could your computer have been infected with a virus? Extermination and countermeasures, explanation of the process

Have you ever noticed that your computer has been slow lately, or that the text is sometimes garbled?If you notice any noticeable changes in your computer's behavior, it may be infected with a virus.The virus is highly contagious, so it is important to take measures as early as possible. Therefore, this time we will explain the cause of the computer abnormality.How to quickly check for virus infection and remove it if infectedI'd like to introduce_______

How to check for computer virus infection?

Some computer viruses initially have a slight effect, remain hidden unnoticed by the user, and then multiply within the computer, eventually causing major damage. There are various types and infection methods of viruses.Therefore, we computer users should prevent virus infection and at the same time,It is also necessary to have a system in place to quickly detect infection..

Here, we will introduce check items for virus infection and how to check for viruses using the software's scan function.

Check items for computer virus infection

If any of the following apply to you, you may be infected with a virus.

• My computer won't start
• operation becomes slower
• The screen display is strange.
• Email is being sent without permission
• data is gone
• Computer frequently force shuts down and restarts
• The lights on your router or modem keep blinking frequently even when you are not using them.

Check with antivirus software

If you notice something wrong with your computer,Also check with antivirus softwareLet's try. By sequentially checking the data stored on the hard disk, you may be able to discover viruses. At this time, if the software is not up to date, it may not be possible to fully confirm the virus infection. Therefore,Before checking with antivirus software, be sure to update the software.

How to remove viruses from your computer

If your computer is found to be infected with a virus, there are two main ways to remove it. First, try removing the virus using antivirus software.

Method using antivirus software

If an infection is detected by a virus scan, it may be possible to remove the computer virus using antivirus software. As a precaution at this time,To prevent the infection from spreading to other computers connected on the network, you must disconnect the LAN cable and isolate the computer.

If antivirus software cannot remove the virus

If the virus cannot be completely eradicated by antivirus software,It must be initialized using computer recovery discs or by a professional service.. Before initializing, in case of serious virus infection,Back up important data and browser recordsIt is a good idea to keep it. Additionally, there is a possibility that you won't be able to deal with the infection until you notice it, so we recommend that you get in the habit of frequently backing up your computer.

Prevent infection with virus countermeasures

Once you have eradicated the virus, take measures to prevent infection from occurring again. The following three points are effective measures against virus infection.

Keep your software up to date

Viruses and other malware exploit vulnerabilities in your computer's operating system to infect your computer. Therefore,Keep your operating system (OS) up to date to maintain high protection against viruses.You can. For typical software such as Windows and Apple, you will receive a notification saying ``Software update is required'' when an update is required. thisUpdate as soon as you receive a notificationLet's do this.

Use antivirus software

Antivirus software has the following roles in virus protection.

• Checks whether data coming in from outside contains viruses.
• Checks whether the data going out contains viruses.
• If you are infected with a virus, isolate it. (Exterminate in some cases)
• If your computer has a firewall function, it prevents the information registered on your computer from being stolen and prevents your computer from being manipulated by outsiders.

In order to fully demonstrate these functions,Software must be on the latest version. Security systems need to be constantly updated to keep up with new viruses being created all the time.

Notes on using storage media

USB memory, CD-R, DVD-R, BD-R, external hard disk, etc.Viruses that spread through storage media automatically execute built-in actions when infected.. Therefore, the virus function is activated simply by inserting a storage medium or information device into a computer, making it easy for the infection to spread to an unspecified number of users. When using storage media, please be careful of the following items.

• When you plug in external hardware, use security software to check for viruses before opening files.
• Do not insert a USB memory into your computer that you do not know about the owner or its contents.
• Change the computer settings to disable the USB memory's automatic playback function.

Early detection and response are important for virus countermeasures

How was it? There are various types of computer viruses. Even if we try to be careful about viruses that evolve day by day, their infection methods may exceed our imagination. It is important to detect computer virus infections as soon as possible before the damage spreads to you and those around you.is. Please refer to this article and review your measures to prevent virus infection.

[Reference site]
・“Let’s take virus countermeasures” Cybersecurity site for citizens│Ministry of Internal Affairs and Communications
・Scan an item with Windows Security│Microsoft