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Mastering Kali Linux for Advanced Penetration Testing by Robert W. Beggs

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Using online and local vulnerability resources

Together, passive and active reconnaissance identifies the attack surface of the target, that is, the total number of points that can be assessed for vulnerabilities. A server with just an operating system installed can only be exploited if there are vulnerabilities in that particular operating system; however, the number of potential vulnerabilities increases with each application that is installed.

Penetration testers and attackers must find the particular exploits that will compromise known and suspected vulnerabilities. The first place to start the search is at vendor sites; most hardware and application vendors release information about vulnerabilities when they release patches and upgrades. If ...

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