&gt; Illegal to have open Wifi, that is true :-) (I think it&#x27;s a 125 Euro fine)<p>No, it is not illegal per se to have an open Wifi, but there is the dreaded paragraph of &quot;Mitstörerhaftung&quot; - that means in lots of cases if someone does something illegal over your open Wifi (say copyright violation), the person who runs the open Wifi will be liable for it.