Ethan, an incident handler, reviews traffic logs showing abnormal connections from internal devices to high-risk...

The primary indicator here is suspicious outbound connections, a key detection category in ECIH network incident analysis. Unexpected communications to known high-risk domains often indicate malware, misconfiguration, or compromise.

Option C is correct because outbound traffic patterns revealed the issue. ECIH highlights that IoT devices frequently lack visibility and controls, making outbound monitoring critical.

Options A, B, and D do not reflect the described behavior.

Monitoring outbound traffic is therefore essential for early detection of compromised or misconfigured devices.