A _____ employs hacking techniques and tools to test the strength of an organization’s defenses.PenTestPhreak testrisk analysisvulnerability assessme

The term you are looking for is "PenTest," which is short for penetration testing. A penetration tester, often referred to as a "pen tester," employs hacking techniques and tools to evaluate the security of an organization by simulating attacks. This process helps identify vulnerabilities and weaknesses in the organization's defenses, allowing them to strengthen their security measures.

In contrast, "phreak" refers to hacking telecommunications systems, while "risk analysis" is a broader term that encompasses identifying and mitigating risks. "Vulnerability assessment" is another method related to identifying weaknesses, but it does not involve active exploitation like penetration testing does. Therefore, in the context of testing defenses, "PenTest" is the most appropriate choice.