http://www.washingtonpost.com/blogs/the-switch/wp/2017/10/16/every-modern-protected-wifi-network-is-vulnerable-warns-government-cyber-watchdog/

A top federal government cybersecurity watchdog issued an advisory on Monday, warning users to update their devices to protect against a newly discovered vulnerability that affects nearly every modern, protected WiFi network.

The U.S. Computer Emergency Readiness Team's announcement comes after a security expert at the University of Leuven in Belgium published findings that showed that a widely used encryption system for wireless networks could give attackers an opening to steal sensitive information such as emails, chat histories and credit card numbers.