War driving is an example of what type of reconnaissance?

War driving is classified as active reconnaissance because it involves actively searching for wireless networks while driving around in a vehicle. This method of reconnaissance typically includes the use of a device to detect and map out the locations of Wi-Fi networks, often with the intent of assessing their security measures.

In active reconnaissance, the person conducting the reconnaissance engages directly with the target environment, specifically querying systems or networks to gather information. This proactive approach contrasts with passive reconnaissance, where the information is gathered without directly interacting with the target, often through observation, open-source intelligence, or other non-intrusive means.

By employing active techniques, such as war driving, an attacker can gain a clearer understanding of which networks are available, their security configurations, and any potential vulnerabilities that could be exploited later.