Even if you are careful not to be infected by viruses while using the Internet, you may always be infected in a way. Many people don't know what to do when they actually get infected with a virus. This time, what to do when you get infected with a virus, what happens if you get infected with a virus. In addition, we will explain what methods are available for virus countermeasures, including the way of thinking.

1. To notice that your PC is infected with a virus

If anti-virus software is installed on a PC, it may not be displayed unless it is a major threat, but notifications and indications are always displayed when a virus is infected. However, if your anti-virus software information is not up-to-date, let's take a look at some of the ways you can find out if your PC is infected with a virus other than anti-virus software. If the virus is not supported, it may be infected.

1-1. Check Task Manager

If you are using Windows, start the Task Manager and check if any unknown programs or processes are running. Some viruses may be disguised as names that are likely to be on your system, but you can use a web search to check for suspected programs and processes.

1-2. Check installed programs

Check the list of programs and apps to see if there ’s anything you do n’t recognize. Let's check this also by Web search etc. like the task manager.

1-3.If your PC gets heavier or freezes

When infected with a virus, starting up in the background may increase the behavior of the PC or increase the number of freezes. Start Task Manager and check for heavy programs and processes, and check if unnecessary services are running.

1-4. Install and check anti-virus software

Many anti-virus security software are available for a fee, but some are available free of charge. It is recommended that you install anti-virus software because some of them can easily detect and remove the virus based on the latest information. Please note that there are many fake software that uses anti-virus software. Please check the URL and domain to be downloaded and collect information, and do so at your own risk.

2. What happens when a PC is infected with a virus

What happens when a PC is infected with a virus? There may be many people who seem to know but do not know. In many cases, you may not realize that you are actually infected with a virus. Let's see what happens when a PC is gradually infected with a virus without knowing it.

2-1. Data is stolen or misused

For example, data such as photos, Excel, and words, personal information containing personal information, etc. were downloaded without permission, and e-mail exchanges were stolen. Depending on the type of virus, data can be viewed or misused by remote control. In addition, there is a risk of secondary damage based on browser usage history.

2-2. Viruses can be spread to contacts in the PC

If you are not only friends, acquaintances, and family members, but also emails and messages for work on your PC, you might be sent a message without your knowledge and spread the virus. This is because it is more likely to open an attached file or access a URL because it is easy to be infected by a virus because it arrives from an email address you know.

2-3. Damage caused by user ID or password being stolen

Being able to view the data on your PC may steal user IDs and passwords for online services, for example, by stealing browser history and email. Do you see the item "Forgot your password" when using the online service? By using this function, you can change your password without permission, receive a password change email, and lose your online banking and credit card information.

2-4. Participation in cyber attacks and impersonation

Some viruses created by malicious subnets may be programs that cause specific cyber attacks. In cyber attacks, multiple PCs are continuously and intermittently attacked on the server, the system goes down, and the SNS account / email account is used without permission, and misinformation is sent or slandered. This is because there are things that try to take actions that lead to It can be awakened.

3. Actions to take when a PC is infected with a virus

As an action to be taken when a virus is infected, it is important to prevent damage from spreading. Let's take a look at the basic measures, including points that are easy to overlook.

3-1. Removal with anti-virus software

Although it is effective when checking whether it is infected with a virus or not, anti-virus software is still very effective. If there is something that will quarantine, disinfect and delete it so that it won't get infected, you can search everything in your PC and see if it's infected. For virus software, there are many people who have not introduced paid software and PCs because they do not want to be heavy, but it is safer to install them. In addition, there is a possibility that there is a program provided by Microsoft if it is Windows, so it is recommended to use it together with the system update.

3-2. External secondary or USB memory

If you do not know the route of virus entry and you remember using an external secondary or USB memory, do not connect or disconnect it easily. We recommend that you do not use an external recording device that is infected with a virus in your private environment, regardless of whether or not you are familiar with it. If there is important data, check for viruses, isolate only those files, and format the external recording device for reuse.

3-3. Initialize and clean install the OS

If the virus-infected PC does not contain any important data, it is best to initialize the OS, perform a clean installation, and update to the latest version. In order to improve the state of infection, it is effective to renovate your PC to the latest state even after considering the following.

4. Anti-virus measures to prevent PCs from being infected

Basically, PCs never get infected with viruses. If you use a PC, you can download or execute it without your knowledge. Let's take a look at measures to prevent PC viruses and how to minimize suspicion even after infection

4-1. Install the latest OS & antivirus software

Since many viruses use vulnerabilities in programs and systems, it can be said that it is essential to keep the OS up to date, make sure to update, and install anti-virus software. Now, even if you don't want to install anti-virus software, you should install it, make sure it can be checked regularly, and keep it up-to-date. It leads to increase. Let's do it.

4-2. Reconfirm PC settings and tenant services

In order to use the PC comfortably, system updates and anti-virus software may be disabled, but please enable them before they are damaged. Also, depending on the compliance, there may be services that enhance security measures, so it is important to check and consider use.

4-3. Beware of illegal sites and suspicious emails

In recent years, an increasing number of sites have been able to illegally browse various contents for free. Let's stop using it easily because everyone is watching. Using illegal sites not only infects with viruses, but also contributes to malicious negatives for cyber attacks. For suspicious emails, there are various things such as making money, losing otherwise, inviting a sweet temptation with words and trying to find out personal information by impatient. Let's be careful not to open easily as "It's okay because you won't be deceived" It is important that you do not open unrecognized emails or messages, and never access the URLs that are listed, even if you open them, and never open attachments.

5. It is also important not to store personal information unnecessarily on the PC

In addition to your own information, it is also effective to miss out on external devices that have been pre-checked for viruses, such as contacts, photos, address books and albums. When using a browser, do not use a function that automatically enters an ID and password using private mode. Don't store your online banking login ID or password in unencrypted text, such as Notepad, even if you make a mistake.

Summary

We explained the anti-virus measures you should know when a virus was infected, and possible damages. It may seem a little light when you hear a virus, but in fact, even cyber individuals from malicious add-ons need to think about the means for Web security and self-defense little by little. Web security measures not only to harm yourself, but also to the surroundings, or to use the Internet as a perpetrator instead of a victim freely and safely, and not to lose convenience Let's have an attitude to learn about anti-virus. This is not a matter that should be left unattended.

Recommended web security measures

The introduction of "WAF" is a great web security measure.

There are various types of WAF, but the cloud-type WAF can be a security measure with less cost and effort.

Cloud-type WAF has a very low hurdle to introduce, so it will be a powerful choice for companies that will implement Web security measures. When selecting a WAF, focus on the support system and implementation results, and select the best one for your company.

Cloud-type WAF Attack Blocker automatically responds to the latest attack patterns, so it is a secure environment even in situations where security patches cannot be applied immediately or vulnerability diagnosis cannot be performed regularly. Can be kept.