WiFi security has been an issue ever since early 802.11 implementations were released to the market with security switched off as the default. This, and the use of unlicensed spectrum, gave cellular players a powerful stick with which to beat the technology up. However, the initial, and inadequate, WEP encryption standard was replaced by WPA (WiFi Protected Access) and, in 2004, by WPA2. Until this was cracked in October 2017, WPA2 was a major success in addressing the ‘insecure’ tag which had been attached to WiFi. Now the WiFi Alliance has started to certify devices using the successor technology, WPA3, which should address the vulnerabilities exploited last autumn by the KRACK attack. In WPA2, key parts of the message were…