So you have to store your data in their cloud? How secure is their cloud? I'm not sure that model works for some companies. Visual prototypes can be really sens

So you have to store your data in their cloud? How secure is their cloud? I'm not sure that model works for some companies. Visual prototypes can be really sensitive data, and each new proprietary cloud inevitably has bugs and security holes that need to be discovered and patched. If you could plug in something vetted and thoroughly pen-tested like Dropbox that might work better. But a brand new cloud is almost guaranteed to have security holes, and I wonder how laser focused a design tool company can be on staying ahead of threats.