A vulnerability scanner is a tool that scans a computer system or network for vulnerabilities. These vulnerabilities can be security holes, software bugs, or configuration errors that could allow an attacker to gain access to the system or network. Vulnerability scanners work by comparing the system or network to a database of known vulnerabilities. If the scanner finds a match, it will report the vulnerability to the system administrator. This allows the administrator to fix the vulnerability before it can be exploited by an attacker.
Vulnerability scanners are an important part of a comprehensive security program. They can help to identify and fix vulnerabilities before they can be exploited by attackers. This can help to protect the system or network from security breaches, data loss, and other threats.