XSS vulnerabilities work because they exploit something that browsers are not able to do: distinguish good code from bad code. Working automatically, based on the code they encounter on the website they have to load, browsers are not able to distinguish whether all the code that is asked to be loaded has a reason to exist or not.
For this reason, if a user stumbles upon a website that has italy phone number been infected through an XSS vulnerability, they are exposed to pieces of code that can turn into threats of various types, a pop-up or a form to steal personal data for example.
But there are also other types of XSS vulnerabilities that work underground without showing anything to the user . It is clear that this second type of exploited vulnerabilities and JavaScript injections are the most dangerous.
To increase the security of your WordPress site, the first thing to do is to understand what we are talking about when we talk about XSS. There are various subcategories of XSS vulnerabilities but they are usually grouped into three macrocategories based on their characteristics. These three groups are stored attacks , reflected attacks and DOM-based attacks .
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What are the characteristics of XSS vulnerability categories?
Now that we have clarified where attacks that can exploit XSS vulnerabilities come from, let's quickly look at the characteristics of each typology.
Let's start with the stored ones . Universally recognized as the worst problems that can happen to a WordPress site, these are the attacks that can end up being actually loaded inside the servers and therefore are potentially the most effective, because they are activated every time a user ends up activating a certain part of a website's database.