The expansion of the internet globally has been extensive, and Wi-Fi networks are now an integral part of daily life and business operations. Despite this, Wi-Fi networks, when not secured by their owners (and not the internet service providers), can provide a platform for misuse, harm and Commission of crimes against others. The lack of security in Wi-Fi networks often stems from various reasons, such as the need for open internet access and the convenience of providing services to customers. However, despite numerous warnings, a large portion of Wi-Fi networks remain insecure in various countries. Today, the development of legal systems, including the German legal system, increasingly inclines toward imposing responsibility not only on the direct perpetrator but also on the owner of an insecure Wi-Fi network. This liability is intended to deter the misuse of these networks for harmful activities. This article analyzes and evaluates the approaches of Germany and the United States to this issue and, in the context of Iranian law, proposes that, given the high incidence of crimes committed via insecure Wi-Fi networks, it would be feasible to apply civil liability rules to these network owners under general civil liability principles. Such a measure could serve as an enhanced deterrent, aligning with the secondary objectives of civil liability rules. Moreover, financial penalties might also be imposed on owners of unsecured Wi-Fi networks as a situational crime prevention strategy to curb cybercrimes.