Recently we started testing to see what protection WordPress security plugins provide against vulnerabilities in other plugins (since plugins vulnerabilities are an actual source of websites being hacked, unlike some other things that these plugins make a big deal or providing protection against). The first vulnerability we tested could be used for serving up malware on a website and the second could give an attacker control over the website. Both of those are types of vulnerabilities that are the kind that are often thought of when discussing the security of websites, for example the very popular Wordfence plugin is advertised as “protecting your website from hacks and malware”. Not every security issue though falls into those categories. As you can guess from the name, an information disclosure vulnerability involves the disclosure of information that isn’t intended to be public and those can be a serious issue. For example, if you run an eCommerce you wouldn’t want your customers’ details to be accessible by the public.