I'm not at all an expert to handle details about the security of WebGL. I have no idea on that front. I do know Chrome and FF just fixed a timing attack vector

I'm not at all an expert to handle details about the security of WebGL. I have no idea on that front. I do know Chrome and FF just fixed a timing attack vector where you could apparently intuit the content of a crossdomain image by interpreting what hues were based on it via the application of shaders. Which means hypothetically you could read text. Like a crazy-person's OCR.