On a practical level, it means an attacker can intercept traffic between devices and a router, allowing them to peek inside all non-SSL traffic. They can also interfere with traffic, theoretically allowing an individual to inject ransomware and malware into unencrypted web pages in an ad-hoc basis.
Wifi stealing is the common problem we face in our everyday life. It even happens without our knowledge. However the control is in our hand and we can stop wifi stealing using the admin panel of our wifi router.
According to a team of engineers at the University of Washington,for the first time it’s possible to use WiFi devices to power the sensors and other devices!