Websites such as WordPress running on a database-based platform and running many server-side PHP scripts can be exposed to a variety of attacks, such as URL injection or insertion of malicious links. Orders in WordPress are sent via URL parameters, which hackers can easily bypass and abuse – causing WordPress to act without permission or misinterpret its work. In simple terms, URL injections occur when someone tries to manipulate your online database using commands sent by the URL.
Often, this form of hacking involves the creation of new pages on your website by hackers – often containing dangerous code snippets or spam links that can make your site a risk to the safety of your visitors. Often, newly created pages are filled with code that redirects your visitors to dangerous areas or allows your web server to participate in attacks that you may not even know about.
An attacker can access your site in a variety of ways, from exploiting old and vulnerable software versions to using insecure directories to hacking a number of third-party plug-ins. especially common in WordPress. What hackers do with your website when they have access can cause you serious problems.