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What type of man-made threat involves former employees attempting to compromise a system maliciously?
Vandalism
Insider Attack
Phishing
Data Breach
The correct answer is: Vandalism
The scenario described pertains to former employees attempting to compromise a system maliciously, which aligns most closely with the concept of an insider attack. This type of threat arises from individuals who have legitimate access to the organization's systems and data, often leveraging their insider knowledge to perform harmful activities. Insider attacks can take various forms, including data theft, sabotage, or unauthorized access to sensitive information. Former employees may have motives related to revenge, financial gain, or simply to expose vulnerabilities in the system they once had access to, making their actions particularly concerning for network security. Vandalism, while a potential threat, typically refers to willful destruction of property and may not necessarily involve insider knowledge or access. Phishing involves deceiving individuals into revealing confidential information, usually targeting unsuspecting employees rather than relying on intimate knowledge of internal systems. A data breach indicates unauthorized access to data, but does not specifically point to the nature of the perpetrator as being a former employee. Thus, the focus on malicious actions from those who previously held access rights is a key factor in recognizing the correct answer as an insider attack.