Add content to impersonation attack (#6572)

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+# Impersonation
+
+Impersonation in cybersecurity refers to an attack technique where a threat actor pretends to be a legitimate person or entity to deceive individuals, systems, or organizations. This tactic is commonly used in social engineering attacks to gain unauthorized access to sensitive information, resources, or systems.
+
+Visit the following resources to learn more:
+
+- [@article@What is an Impersonation Attack?](https://www.upguard.com/blog/impersonation-attack)