Thanks to some contributions to the Open Collective of Catel, we were able to purchase a code-signing certificate and will be code-signing new packages of Catel starting with Catel 5.9-alpha0021 (available on MyGet). Code signed assemblies The assemblies will be code-signed, which can be seen via the properties. Code signed NuGet packages The NuGet packages will be code-signed, which can be seen via the NuGet Package Explorer. Consider contributing to Catel Haven’t heard yet about Catel joining Open Collective? Please consider making a personal or enterprise contribution to provide us with resources to continue development on Catel.