KRACK Attack Puts Wi-Fi Connections at Risk. We are not talking about Public Wi-fi networks here, you should already know those are not secure. Instead we are talking about networks that most of us think are secure because they have a password. In fact a recent vulnerability was found in the standard protocol used on wireless networks.
"A new security flaw, discovered by researcher Mathy Vanhoef of the University of Leuven in Belgium, appears to be affecting Wi-Fi connections."
"United States Computer Emergency Readiness Team (CERT) issued a warning on Monday that encouraged all Wi-Fi users to install updates when available. The organization is keeping a running list of affected vendors."
-- http://money.cnn.com/2017/10/16/technology/wi-fi-flaw-krack-security/index.html