What is a website vulnerability?

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There are weak points in any website system, which hackers can use to control it and use users' personal data. These weak points are website vulnerabilities. To prevent fraudsters from getting information from a website, it must be reliably protected. But even the most secure system has loopholes through which hackers can access data. Having penetrated the system, they can change any information and use the website for personal purposes.


In the IT field, vulnerabilities are weaknesses in a system that hackers exploit to intentionally cause damage. These weaknesses arise from programming errors, system design medical mail list errors, weak passwords, viruses and malware, script and SQL injections.

Both websites and various software can be vulnerable and lose information due to system flaws that hackers have used for illegal actions. Some flaws pose a real danger to web resources and can seriously harm your projects. Therefore, it is important to understand what website vulnerabilities exist and how they can affect Internet projects.

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Let's give a basic example to better understand what website vulnerabilities are.

Let's say a web resource is a large fortified fortress with loopholes. As long as no outsiders enter the fortress, everything is fine. At first glance, thanks to the high walls, cannons on the towers and a deep moat, an ill-wisher cannot get inside.

However, one intruder climbed over the wall, another, disguised as a civilian, entered the gate, and a third entered the courtyard through an unguarded secret passage.

Situations with websites are not much different from this example. You can take care of reliable and multi-stage protection of your resource. But the more complex it is, the higher the probability that one of the elements will have a vulnerable spot for the security of the entire system. Using website vulnerabilities, an intruder can disrupt the resource and gain full access to the system.

The results of a special study on the most vulnerable sites conducted by Positive Technologies showed that the resources most susceptible to hacker attacks are those written in PHP and have their own engine. The safest sites were those using Java/ASP.NET technologies and commercial CMS.

Remember that the main goal of hackers is to gain full control over the system, and if the site has vulnerabilities, the task for intruders is simplified. Therefore, do not spare money on creating a secure resource. It is cheaper than further elimination of shortcomings and compensation for damage from hacker attacks.