Disclaimer: I am not a lawyer In my opinion you should first get technical people to document as much "discovery" in both technical and simple layman's terms,

Disclaimer: I am not a lawyer In my opinion you should first get technical people to document as much "discovery" in both technical and simple layman's terms, then get lawyers to review your findings and determine if a legal case and if there are financial or brand damages can be built. They can take it from there.