Sucuri Server-Side Scanner by Sucuri monitors all files on the server for signs of malware, backdoors, phishing pages, spam, DDoS scripts, and more. It alerts users to changes in DNS records, SSL certificates, or security misconfigurations. It is designed to detect signs of SEO spam before search engines do, ensuring that blocklisting authorities' security warnings are monitored. The scanner is built for all platforms and custom sites, providing a fast and lightweight scanning engine that is constantly updated to address the spread of malicious content. It protects sites and stops suspicious behavior, mitigating new threats without requiring patches.