Code injection is the computer code inserted into the application installed on the PC (browser, operating system, email client, and game) to change its working or some features. This technology is often used in the authoritative program which performs duties of course. For example, Anti-Virus software uses code injection for display navigation of PC network traffic and monitors. However, some malicious programs are also exploited to infect computers. Learn about code injection and the best ways to combat it.
Here are some examples of code injection:
- Antivirus and Antimalware such as Comodo Antivirus, Avast, Bitdefender, and Kaspersky, to monitor network traffic or block some dangerous websites;
- Windows theme management software ;
- Malware and Virus, which is used to alter the browser and monitor user navigation or to capture information such as passwords, or more specifically to intercept conversations or credit card numbers;
- Translation programs such as Babylon translation, to activate the language translator with a mouse or keyboard keys;
- Certain system drivers such as Intel video drivers to perform particular tasks and optimize peripherals.
Let’s use simple words to understand how code injection works on Windows. The injection code can be done in some DLL files (focusing on this type) as another mod. Function Foundation has an API that allows you to connect a variety of processes between APIs for Windows and there.
In fact, the software can execute some instructions in other processes and programs. The software related to this technology has not changed directly. Code insertion waits for the code insertion application to load. While this is the method used by many official programs, it can pose a security risk as it is the basis of many viruses and malware.
How to Check Code Injection on Windows?
The best way to check for code entering your computer is to use the Process Explorer software.
Follow this procedure:
- Download the “ Process Explorer ” software from the official link;
- Now unpack the downloaded package and run the executable file (procexp64.exe for 64-bit Windows);
- Click “View” in the application menu bar;
- Click “Lower Pane View” and select “DLLs” ;
- At this point, click on the process to check ( eg Google Chrome ), in the central part of the window;
- Carefully check, in the lower part of “Process Explorer”, the DLLs loaded together with the application.
Since we work in a Windows environment, it is common to find numerous DLLs signed by Microsoft. You can easily detect unwanted results from unknown sources by clicking on the menu bar under “Company Name” to filter the list of results.
Remember that DLL injection isn’t the only way to inject code. In this article, we have focused on it because it is also widely used in training programs. 
It’s not always a bad thing
Code injection techniques shouldn’t always be considered bad. There are several programs that use code injection techniques and are completely stable and useful. Think of an antivirus that uses this principle to “log in” to other software and make sure that the data or files it is processing are not causing problems. Another example is a video card driver. Simply put, the list is long.
Website creation and code injection
When you create a website, you actually cross and combine all these languages. Start with PHP and create HTML and CSS up to building SQL queries and dynamic regular expressions and even running system commands via Javascript (although not everyone understands this!). What we often do is we can make phone calls and arrange and dial in 7 languages…
Securing your code is the first step and this is where we, as website builders, have the most control (and accountability). How to do it? The first thing to avoid is thinking only in terms of HTML. A website is a work of art that combines many languages.
- HTML/HTTP
- Javascript
- CSS
- PHP
- SQL
- Command shell/filesystem browsing
- Regular expressions
