Your laptop cannot tell the difference between a real deauthentication frame from the router and a fake one sent from a hacker's laptop. The Wi-Fi standard relies on "trust on the wire" for management frames.
When you run a "WiFi Kill" script from GitHub, your network card enters "Monitor Mode" (RFMON). In this mode, the card ignores the standard network stack and allows you to inject raw packets into the air. The script builds a packet that looks like it came from the router to the victim, saying "Goodbye." wifi kill github
The next time you search for "wifi kill github," remember: The kill isn't in the code. The kill is in the lack of encryption. Study the code, patch your network, and leave the coffee shop's internet alone. If you found a "WiFi Kill" repository useful for a legitimate penetration test, remember to disclose your findings to the network owner after obtaining written permission. Your laptop cannot tell the difference between a