Great link, thanks for sharing. The quote that stood out to me was “My issue was that patient safety wasn’t front and center.”

I don't have a problem with MedSec making money by shorting St. Jude's stock (that seems to align incentives to take care of security issues as early as possible). But if MedSec publicly disclosed specific, exploitable vulnerabilities (I'm not sure about specifics from the article), they shouldn't be able to hide behind the "doing what is best for the consumer" argument. It's definitely a clever business hack, and that's alright, but the fake sense of moral superiority isn't.