Not sure which forum this question should be posted.

Good 4K and 1080p wifi IP camera are getting really cheap.

I have several questions on bandwidth and data usage.

How much data usage does it use? Lets say I setup my wifi camera to monitor my house in California (on my network) and I am working in Florida which means I will monitor by phone. Will the data usage be from my phone data plan or my data from my wifi ISP? I know there are features such as motion detection, etc... but I am just wondering how much data usage would it be 24x7 monitoring (without motion detection).

Last, how secure are these wifi cameras?