In Perth, just under 6% of access points (APs) were left unencrypted. This is down from between 14% and 28% in other cities weve measured in the past. Just over two thirds of the APs were offering the latest and greatest protection, WPA2/CCMP. 25% of APs also supported older cryptographic standards such as WPA/TKIP, after the outdated RC4 algorithm it uses for encryption. One manufacturer, HP, seems to enable an ad-hoc WiFi connection by default.”]
Source: https://nakedsecurity.sophos.com/2018/01/11/warbiking-in-perth/