https://www.theverge.com/2017/10/16/16481818/wi-fi-attack-response-security-patches

Technology companies are starting to respond to a new Wi-Fi exploit affecting all modern Wi-Fi networks using WPA or WPA 2 encryption. The security vulnerabilities allow attackers to read Wi-Fi traffic between devices and wireless access points, and in some cases even modify it to inject malware into websites. Security researchers claim devices running macOS, Windows, iOS, Android, and Linux will be affected by the vulnerabilities.

Microsoft says it has already fixed the problem for customers running supported versions of Windows. “We have released a security update to address this issue,” says a Microsoft spokesperson in a statement to The Verge. “Customers who apply the update, or have automatic updates enabled, will be protected. We continue to encourage customers to turn on automatic updates to help ensure they are protected.” Microsoft is planning to publish details of the update later today.