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Vulnerability scanning is a security technique used to identify security weaknesses in a computer system. Vulnerability scanning can be used by individuals or network administrators for security purposes, or it can be used by hackers attempting to gain unauthorized access to computer systems.
The downside of vulnerability scanning is that it can inadvertently result in computer crashes during the actual scan if the operating system views the vulnerability scan as invasive. Vulnerability scanners range from very expensive enterprise-level products to free open-source tools.
Types of vulnerability scanners include: