Data Privacy with Tensorboard
No, Tensorboard does not upload the data to "the cloud" or anywhere outside the computer where it is running, it just interprets data produced by the model.
I've recently begun using Tensorflow via Keras and Python 3.5 to analyze company data, and I am by no means an expert and only recently built my first "real-world" model. 
With my experimental data I used Tensorboard to visualiza how my neural network was working, and I would like to do the same with my real data. However, my company is extremely strict about company data leaving our servers -  so my question is this:
Does tensorboard take the raw data used in the model and upload it off-site to generate its reports/visuals or does it only use processed data/results from my model?
I've done several google searches already, and I haven't found anything conclusive one way or the other.
If I'm not asking this question correctly, please let me know - I'm new to all of this.
Thank you.