So do thousands of other citizens from other entities and locales - many of which we serve.
I work regularly with organizations throughout the world that know how to secure their networks. Sometimes it is quite a chore to get Rhino to work in their secure environments. They never allow the computer to access the internet for any reason.
I’ve never heard of a secure entity (Apple, Google, the Chinese military, etc.) that trusts external vendor software to ensure their data security. A basic premise of security is the principle of least privilege - only allow the things that must be allowed for a given task to be successfully completed.
Network and data security is something we take very seriously for our own network and data; that’s why we don’t house or transmit your data without your explicit permission (when Rhino crashes, we ask for the model, that’s the only time I can think of that we ask for your data, and it’s strictly optional). I strongly encourage you to set up your own network to match the level of security your work demands, and not trust any software to do it for you.
If you remain concerned, I encourage you to install your license as a single-computer license on the computer you want to use. If you need to use Rhino on multiple computers, buy a license for each one. Secure environments is one reason why single-computer licensing still exists in Rhino.