The Krack vulnerability is another good reason to ditch public Wi-Fi
Security researchers have released details of Krack, a Wi-Fi WPA2 vulnerability that can compromise almost all Wi-Fi devices. You should update all your devices and use a VPN on public Wi-Fi.The academics who uncovered the Wi-Fi security vulnerability revealed how the WPA2 standard used across almost all Wi-Fi devices can be exploited to read messages, banking information and intercept sensitive files. However, to do so they say a hacker must be near to the wireless connection point and the website mustn't be properly encrypting user data.