ELI5 Wi-Fi - how does wifi hacking work?

Wifi explained. How does wifi hacking actually work? Can a hacker reconstruct one's screen? When the Wifi is sluggish, why does restarting router magically fix it? ... We explain like i'm five! Thank you to the r/explainlikeimfive community as always and in particular the following users whose questions and comments formed the basis of this discussion: mustbefate, splad, mantice, kocholuna, AuroraAri, wace, -voiz & finalrun To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Send us an e-mail: [email protected]