What are web shells and how can I protect my system from their remote attacks?

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Philippe Gloaguen

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Browsing the Internet and using the web applications available today, we can enjoy an infinite number of options. We can use technological tools to have fun, work and even study. However, it must be borne in mind that, although it brings many advantages, there are also many dangers on the Internet. That's why we show you today what web shells are and how you can protect your system from remote attacks .

While it sounds unbelievable, there are far more viruses and possible attacks on the Internet than we can remember. In fact, simply browsing puts us at the mercy of hackers and malicious people who can damage our personal information. That's why it's always good to know some of these dangers and know yourself defend from them , which is just what we will do in this article.

What are web shells?

Today we live in a truly technological era and there are no signs that this will change. And it is that for many of us technology and the Internet are a vital part of our life, greatly facilitating many daily activities. But the truth is, as we use our electronic devices as if nothing else, we can expose ourselves to dangers we never even imagined .

For example, there are many viruses and hackers that can affect even our most private information and important. This is why it is vital to know these dangers and even be able to prevent cyber attacks. Today we will talk about one of the most frequent dangers when surfing the Internet: web shells.

We can define it as a malicious script that affects the privacy and security of web servers or some other target, such as web applications. It works like a sorta say "backdoor" or "backdoor" which allows hackers to do what they want with attacked servers, even without others noticing.

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The reach of these web shells is very wide, as they can also affect public networks with thousands of connected devices. This is further proof that it is very important to protect yourself when using public WiFi networks. Now, how can you protect yourself from these attacks? Well, here are some of the things you can do.

How to detect a remote attack from a web shell?

The first thing to protect against a web shell attack is to be able to find it. And this is particularly difficult, as most of the hackers who implement them use an encryption system that makes it nearly impossible to notice everything they do. But there are things you can do to detect them, such as:

  • Detect unusual or unusual traffic flows.
  • Compare how a different version of the web app works with the one you have now. This will help you find anomalies in the web application .
  • Check for any web shells that may have been modified or configured.

Something that can help you know the number of visits to a web page is to use tracking tools that you can find completely free.

How to protect the system from remote attacks?

For the benefit of those who suspect they have this problem, there are tools designed to protect you from attacks by remote web shell. For example, we may use tools such as firewalls that protect the integrity of your server or web application.

For example, you can use Cloudflare's WAF for this purpose. This, like other tools of its kind, examines HTTP requests to the website, filtering illegal traffic from legitimate traffic to protect it from potential intruders . You have several options when choosing the quality of security you want, high or low.

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Furthermore, you will protect not only the web app from possible web shell attacks, but also other problems such as SQL injections or cross-site scripting. So we can see that this type of firewall is a excellent protection tool for servers and web applications, regardless of the attack they receive.

We hope that this entire guide will be of great use to you and that you can also get the most out of your time on the internet, without having to worry about web shells or any other similar problems.

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