ngrokd (the server portion) does not store any of the data. the only portion it inspects is the Host header to determine routing information. All of the code fo

ngrokd (the server portion) does not store any of the data. the only portion it inspects is the Host header to determine routing information. All of the code for inspecting the traffic is done on the client side on the machine you control. =) Lastly, the code is open source at github.com/inconshreveable/ngrok if you'd like to audit it.