Definition
Information Gathering and Vulnerability Scanning refers to the systematic process of collecting data about a target system or network and then analyzing that information to identify potential weaknesses or security flaws. This involves using various tools and techniques to discover open ports, running services, operating system versions, and known vulnerabilities. Performing these actions is crucial for understanding an organization's attack surface and proactively addressing security risks before they can be exploited. For instance, a penetration tester might use Nmap to scan a network for active hosts and open ports, then use Nessus to identify specific software vulnerabilities on those hosts. This process is distinct from active exploitation, which involves attempting to leverage identified vulnerabilities. These concepts are fundamental to cybersecurity certifications like CompTIA Security+ and CySA+.