I'd argue that so far, that's exactly the point, their response makes it worse.

"We have thoroughly investigated this technology and do not find any evidence to substantiate security concerns" is a laughable statement to have issued.

I can understand the legal reasons for not admitting to the security issues. But outright saying that they can't find anything to suggest they exist indicates a company I wouldn't want to do business with.

To expand on that, in this case I know enough about the subject matter to understand that it's ridiculous to suggest there aren't security concerns. But I can't guarantee this will be the case for other problems. So going forward I'd probably avoid being a customer of a company who I have positive proof is prepared to issue blatantly incorrect statements about security issues.