Krack

«The technique “can be abused to steal sensitive information such as credit card numbers, passwords, chat messages, emails, photos, and so on,” he wrote. “The attack works against all modern protected Wi-Fi networks. Depending on the network configuration, it is also possible to inject and manipulate data».

Source : What you need to know about KRACK, the newly-discovered wifi bug that lets hackers snoop on your devices — Quartz