Dynamic Web Pages: Do They Increase Cyber Threats?
Authored By Emma Sloan

Do dynamic web pages increase the risk of cyber threats?
Assessing risk level is a core component of any successful cybersecurity endeavor. In today's blog, our team of ethical hackers details the role dynamic web pages play in cyber-related risk, the differences between static and dynamic web pages, what your team can do to mitigate web risks, and more.
What is a Dynamic Web Page?
A dynamic web page displays different content for different users while retaining the same layout and design. Such pages, usually written in CGI, AJAX, ASP or ASP.NET, take longer to load than simple static pages. They’re frequently implemented to show information that changes frequently, like weather updates or stock prices.
Dynamic pages usually contain application programs for different services and require server-side resources like databases. A database allows the page creator to separate the website’s design from the content displayed to users. Once they upload content into the database, it is retrieved by the website in response to a user request.
Dynamic Web Pages vs. Static Web Pages
In direct contrast, a static web page (or overall static website) contains simple HTML pages and supporting files (e.g., Cascading Style Sheets (CSS), JavaScript (JS)) hosted on a web server.
When a site visitor requests a static page, say, by clicking a link, selecting a browser bookmark, or entering a URL; the web server sends the page directly to the web browser without modifying the final content of the page.
Do Dynamic Web Pages Increase the Risk of Cyber Threats?
In short? Yes. The "why", however, is a bit more involved:
Although dynamic web pages are helpful for many websites, they can cause difficulties for application security testing teams.
For one, developers struggle to find a consistent form of communication with the different system components, which makes it difficult to do automated testing. This results in extra manual effort and extra costs in tester resources.
Next, since the client and server are closely coupled, it’s challenging to develop, test and deploy them independently. This also poses another issue: more code in one place, which means more clutter, and a higher risk of “spaghetti code”, i.e., code that’s unstructured, convoluted, and difficult to maintain. Furthermore, since server programming and client programming require different approaches, several developers end up working on one codebase, which leads to chaos, not only during development but also during testing.
Finally, dynamic web pages require more in-depth fuzzing and manual testing to understand how untrusted user inputs can enable unauthorized access, and affect back-end operations. For example, a bad actor may execute a command injection attack to execute arbitrary commands on the host operating system via a vulnerable web application. Such attacks are possible when the application passes unsafe user-supplied data, say through forms, which are very common in dynamic web pages.
Similarly, a threat actor may execute an SQL injection