... green closed padlock. One, by the look of its name, was a neighbour's smart vacuum showing its setup hotspot. Its radio didn't even do 802.11n, and it was supposedly speaking a protocol from 2018. system_profiler SPAirPortDataType agreed with my suspicion: Security: None . Netfox said Enhanced Open, Open . The code looked right This is the classifier as it shipped: private static let enhancedOpenModes: [CWSecurity] = [.OWE, .oweTransition] static func classifyAccess(for cwNetwork: CWNetwork) -> WiFiNetwork.Access { WiFiNetwork.Access.classify( open: cwNetwork.supportsSecurity ... ... Mixed. It's not a bug, it's a different question Once the table is in front of you, the pattern is clear. supportsSecurity(_:) doesn't answer "does this access point advertise this mode?" . It answers "could a profile