Vulnerability scanners are automated tools that allow organizations to check if their networks, systems and applications have security weaknesses that could expose them to attacks. Vulnerability scanning is a common practice across networks and is often mandated by industry standards and government regulations to improve the organization’s security posture. The ease of gaining access to parts of the internal network depends on how the network is configured and, more importantly, the network segment is segmented. External and internal vulnerability scans are especially important in this context because misconfigured and insecure deployments of databases in the cloud have been a common occurrence.”]
Source: https://www.csoonline.com/article/3537230/what-are-vulnerability-scanners-and-how-do-they-work.html