safe, local, secure and is it possible?

I am looking to get deeper in to making AI videos, but want to save money and be free to do it locally with no limits.

I also work in IT and have been doing so for over 30 years, and have concerns that have been instilled in my experiences.

Here is my question. are there any models i can look into that are safe and secure without having to reach into some dark dank database or server that might decide to throw malware / spyware / viruses into my system?

i saw a video on the ease of Wangp install, but was concerned. But I don’t want to toss out the use of comfyui if that means a chance of maybe using a LoRA that may be a little more secure, but a high level of difficulty.

Guess what I am saying, I place a high value of being secure than getting something for free or low cost.

Am I asking the questions? Or am I better off just paying VEO / LTX fees to a service?

Thanks…