It's "programs designed to intentionally cause damage to third party programs"!
The main (famous) viruses are shown in the table again. Please take a look.
Name | What is it? |
Worm | A terrifying virus that spreads through a network in an instant. It is called "Worm" because it can exist alone. And not only from the network, but also from external media such as USB memory! |
Trojan horse | It's also a scary virus that seems innocuous and has been destroyed or leaked behind the scenes, based on the tactics used in Greek mythology. |
File-infection virus | A virus that parasitizes and multiplies program executables (For example, "Extension" is exe.). There are 2 types, "Overtype" and "Write-once type". |
Macro virus | A virus that exploits a function called "Macro" in Microsoft's "Word" and "Excel" business software. |
Spyware | A program that sends various pieces of information out of the computer on which it is installed. It's called "Malware" = "Spyware" like "spy" because it works without your knowledge. It does not increase because the purpose is to collect information. |
I started with "What is a virus?" and briefly described the main types of viruses, but they were actually contained within the "Malware". So what is the "Malware"? "Any malicious program."The end. |
※This is how it is illustrated. |
Here's how to avoid viruses! I'd like to, but first of all, let's know how viruses come in.
Cause |
Detail |
Images (Made by "Team Graynet") |
Mails |
When you open a mail attachment, |
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Access to unauthorized sites |
When you visit a malicious site, |
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Over the network |
Unprotected or otherwise vulnerable computers can become infected with malware through "only" that connect to the network. |
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External Media |
There is malware in CD-ROM, DVD and USB memory, and when you load it, a tragedy begins...! |
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Install without your knowledge |
There is a huge amount of malware in the smartphone app store (Especially for Android). |
Of course, there are other causes, but this is the most common one.
What can we do about these horrible viruses?
※The update will give you more peace of mind! |
![]() Check the URL! Examples: "helloworld.com" for real URLs, "hel1oworld.com" for fake URL. There are other ways to distinguish them, but I will introduce them later. ![]() Keep your Internet browser up to date! As of October 25, 2019, Windows 10 is at version 1903, Macos is at Catalina, iOS is at iOS 13.1.3 ![]() Install anti-virus software! ![]() When downloading files from outside, make sure the source is trustworthy, and be careful! However, even if you take sufficient measures, the possibility of virus infection will not be zero.
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