Can an adversary sitting outside in the parking lot or in the building next door intercept traffic flowing between your wireless equipment?

Yes, an adversary sitting outside in the parking lot or in a nearby building can potentially intercept wireless traffic if the network is not adequately secured. Wireless communications, especially if unencrypted, can be vulnerable to eavesdropping using tools that capture radio signals. Implementing strong encryption protocols (like WPA3 for Wi-Fi) and using secure VPNs can significantly mitigate this risk. However, the inherent nature of wireless signals makes them more susceptible to interception compared to wired connections.