Definition of Defacing
Defacing is included in one of the web hacking or application programs that focus on changing the appearance of the web and also the physical configuration of the web.
Defacing also sometimes focuses on application programs without having to go through the program source code . While for deface is a result of the cracking process. The technique used is to read the source code, then change the appearance of the image and also edit html / css.
Someone who does this technique will make changes to the home page, index file, and also other pages that are still linked to one website URL. . Activities like this are often carried out by people who are not responsible for the purpose of disrupting the webs and will certainly harm the people who own and manage the web.
This web deface can be launched well if a gap is found on the protection or security system on the website. One of the characteristics that can be found when someone's web has been affected by defacing is when the appearance changes with the previous appearance. This change certainly has nothing to do with the website's profile and even to the point of displaying inappropriate images or strange and disrespectful messages.
Types of Web Deface
 After knowing the definition of Defacing, we will now explain several types of web defaces that are important for you to know:
1. Full of Page
This first web deface means hacking a full page of the victim's website. How to do this web browser hackers must be able to connect to server victims so that he can find the root location of the website. After that, the new hacker can do deface by controlling the index file and others in full.
2. Add only to a part of the page
The second type of deface is that the hacker will only add an additional part to the page. For example, hackers will only provide additional writing or images or can also add scripts which will certainly interfere with the website.
This method can be done when the hacker discovered if there was a gap in the website's security system. Typically, hackers will deface using programs such as SQL or database injection.
How it Works Defacing
Website deface or defacing certainly has its own way of working. However, it should be noted that hackers can only deface when there is a vulnerability in the website's security system.
So what exactly is the purpose of doing this defacing? They certainly have a negative goal even though it is not always those who are doing this defacing technique is wrong.
Usually hackers will go directly to the victim's website if it turns out that the website has committed a violation or doing things that make a lot of people angry, including the hacker himself . A case in point is the Malaysian government site which was hit by defacing which is believed to have been carried out by Indonesian hackers.
As for the other purposes behind a person doing defacing, among others:
- Trial, meaning that the person is just learning the defacing technique and trying to find the victim's website randomly.
- Want to show that he is someone who is an expert in that field or wants to show off skills.
- People who do defacing usually want to gain popularity.
- A person who does defacing with the aim of giving lessons or showing a sense of defeat, like the case mentioned earlier.
- Wants to get praise.
Basically, the purpose of doing this technique starts from trial and error as well because the person concerned is upset, disappointed, or even angry with individuals, groups, or even agencies above words or deeds which hurt or hurt the hearts of many people.  How to Prevent Deface
Everybody does not want his website to get defaced which will only harm and damage the name of the website. Then how to prevent it? In the following, we will explain some steps that can be taken to prevent a website from attack.
1. Use a CMS that still uses the default setting
The first way that can be done so that our website is not defaced is to use CMS which settings are still in the default condition. It should be understood that a hacker will not hack a website caused by the website itself, unless our website is well known.
Hackers will start scanning while browsing the internet and then look for and find weaknesses of the website you have. From here hackers can start fiddling with your website according to what they want and can even just do deface, but change other things.
2. Use a secure password or username
The second way you can do that is by using a username or password that is certainly safe. Make sure you use a username and password that is unique and strong. This will make hackers difficult and can't even enter your website. You also use the generator and then save your password.
3. Perform regular backups
How to prevent deface that is no less effective is to do backup periodically. When someone's website has been defaced, the most effective way is to back up. That way, the website admin can get back online.
Thus information about the definition of Defacing and how it works, and how to prevent Defacing. Hope it is useful.