I tend to agree here - of course security is a concern and the horror stories are just that, horrific, but how often (specifically on mobile) do they happen? And with such a significant amount of our personal data now on devices - photos, health, financial - if there were constant massive exploitation there'd be relentless pressure to improve.
It was a bit interesting to see, and perhaps not at all surprising, that they've been around since 2010. And they crossed the billion-dollar-valuation threshold 4 years later.