Even if your website is a brochure site and doesn't contain any forms, search bars or downloads - it is still a viable target for hackers.
Hackers can exploit vulnerabilities on your website to install malicious scripts, code and additional content that can harm your users. This can include hidden forms put on your website that are designed to steal user data from their autofill keychains or less invasive scripts.
Outlined in the 7th principle of the new GDPR regulations; Not all security breaches have such grave consequences. Many cause less serious embarrassment or inconvenience to the individuals concerned. Individuals are entitled to be protected from this kind of harm.
It is your responsibility to ensure that users visiting your website are safe from this kind of activity.
CyberScanner searches not only for exploits that can lead to data breaches, but also those that can lead to other issues - such as Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), and issues with HTTPS (SSL) installations.