Which of the following is the most common attack against a wireless network?

• A. Man-in-the-middle attack using an evil twin
• B. Unauthorized network access
• C. Wireless DoS attacks
• D. None of the above

Answer: (B)

The primary risk being tested is that wireless networks are easiest to exploit when someone gains unauthorized access. Because wireless signals propagate through air, networks are vulnerable if authentication is weak or misconfigured (open networks, default or weak passwords, or insecure encryption). An attacker who connects without permission can eavesdrop, access resources, or pivot to other devices, making unauthorized access the common entry point for many attacks. Methods that aim to imitate a legitimate access point or disrupt service exist, but they are specific techniques that rely on gaining access or denying service; the everyday threat most networks face is someone simply connecting without authorization.