Web Security and Optimization Scanner by eCyLabs helps discover external URLs and identify Malware Infected URLs, Security Misconfigurations, Domain BlackList Detection, URL Category Validation, Broken Links, URL Load Time Test, File integrity check, CMS Discloser status, Email Authentication Issues (SPF/DMARC), DNS High Availability status, Firewall Protection Status, Open Ports, and Registrar Lock Status. It provides insight into the security posture of applications, gathering information from various sources and offering recommendations for improvement.