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A little very convenient function that can be done on a Windows computer [One-shot display of desktop screen, etc.]
This time, I will talk about “how to hack”.
Think the word “hacking” is only used in TV and movies?
In fact, many websites are actually hacked and suffer damage such as information leakage and falsification.
We hope that after reading this article, you will be able to deepen your understanding of what hacking techniques are and how to deal with them.
Hacking is the act of obtaining confidential information by unauthorized attack or intrusion into a computer.
Also, people who hack are commonly called “hackers”, but that’s not exactly the case.
To be precise, a hacker is someone who has a deeper technical knowledge of computers and electrical circuits than ordinary people and uses that knowledge to solve technical problems.
I use my expertise to look “inside” a computer, but only to solve problems.
If this act of looking “inside” the computer is not a problem-solving, but an unauthorized access intended to destroy or steal information, it is called a “cracker” rather than a hacker.
This is more common because the word hacker is used when it is reported in the mass media, but to be exact, it is called “cracking” to illegally access and do evil things with a “cracker” increase.
In this blog, I will use the words “hacker” and “hacking”, which have become popular because they are still unfamiliar.
I think you will have the correct knowledge if you read it as actually being cracker cracking.
A website can be said to have been “hacked” in several ways.
• Someone has access to my account
• Gaining access to your site and inserting malicious code (varies depending on the hacker’s intent) into your site.
If the site is hacked, the following damages are assumed.
・Infecting a site visitor’s computer with a virus
・Forcing a site visitor to be redirected to another site.
・Using a hacked website to attack and bring down another website.
・ Leak or falsify information about the site.
[How to hack a website]
Here are some common hacking techniques. If the site lacks security measures, it may be easily hacked by these tricks.
① Cross-site scripting (XSS)
A hacker can perform arbitrary operations on a site user’s browser.
It is possible to forcibly send site visitors to another site to infect them with a virus, or to steal the input contents of the keyboard when entering personal information and send it to the outside.
It is also possible to steal cookies, and hackers may be able to spy on pages that users were viewing, such as personal information confirmation pages.
② SQL injection
SQL is a programming language that manages and operates databases. SQL injection is the abuse of this SQL to perform unauthorized operations on the database.
③ Cross-site request forgery (CSRF)
A hacker can paste sentences and URLs that attract interest to BBS, etc., and click to make unintended writing or operation.
If this trick is used, in addition to causing unintended writing as described above, there is also the possibility of information leakage and financial damage if the URL is for sending personal information data.
It is a hacking technique in which the page of the site where the trap is set is placed behind the page of the normal site.
If you click on a seemingly harmless link, you will also click on the link of the overlapping trap site.
If you click it, the information you entered may be sent to the trap site, or you may be forced to write unintentionally on a bulletin board.
It is not possible to judge that the sites are overlapped by appearance, and it is characterized by being damaged without knowing it.
(5) Forced Browsing
An attack in which, when accessing a web page, the URL is entered directly in the address bar instead of following the link from the published page, thereby stealing a glance at files that the website does not intend to make public. is.
[Measures to prevent hacking]
To prevent hacking, you can take the following measures:
– Use secure passwords.
Using complex passwords that cannot be easily guessed helps prevent hackers from entering.
•Install security software Installing
security software does not guarantee peace of mind. It is important to always keep it up to date.
• Update website software.
For example, if you are using WordPress, you can prevent malware intrusion by always updating to the latest version.
・Performing a security diagnosis If a
site has vulnerabilities, it becomes easier to be targeted.
There is a method of using a security company’s diagnostic service to check for vulnerabilities and take countermeasures.
Hacking techniques are evolving day by day, and many of the hackers who hack are very technically skilled, so it is not possible to completely prevent them with the above alone.
Considering the risk of your computer becoming unusable or losing data due to being hacked, you may save files that are really important and would cause problems if they are leaked onto your computer, instead of storing them on an external storage device. It is important to take regular backups into consideration.