KRACK Wireless Security Vulnerability
A vulnerability in the WPA2 wireless protocol called Krack potentially allow attackers to eavesdrop on wireless connections and inject data into the wireless stream in order to install malware or modify web pages.
To protect yourself, many Wi-Fi product vendors will be releasing updated firmware and drivers for their products. It is strongly recommended that users update their hardware or have it updated as soon as a update is available in order to protect themselves. This includes router firmware and wireless network card drivers.