Contents:Routers and mail traffic are central points in networks that are both attack targets and security barriers. Attackers use various methods to hack routers or mail accounts and thus gain access to networks and connected devices. The most common attack vectors include weak or standard passwords, outdated firmware, open ports on routers and insecure functions such as WPS or UPnP.Mr. Meier lists where and how possible dangers threaten and how they can be averted if necessary.(Translated from German using AI.)