WPA2 je ranjiv na 'key reinstallation attack' aka KRACK. Ne možeš se zaštiti mijenjanjem lozinke :)
https://www.howtogeek.com/329671/your-wi-fi-network-is-vulnerable-how-to-protect-yourself-against-krack/
Naravno, Debian i braća su već zakrpani. I MS je brzo reagirao pa je patch na desetki izdan 16.-og. Za ostale verzije tko zna.
https://www.neowin.net/news/debian-based-distributions-patch-against-wpa2-exploit
Tko je zakrpan do sada
https://char.gd/blog/2017/wifi-has-been-broken-heres-the-companies-that-have-already-fixed-it