Hi datamason and others,
actually we notified all users of AMS via notification leading to our blogpost where is step-by-step guide how to avoid this threat.

Now we work also on realtime Stagefright protection (it will be released hopefully during next few weeks). But regarding Stagefright detection… It’s still not 100% reliable (https://blog.exodusintel.com/2015/08/13/stagefright-mission-accomplished/) and we don’t want to put into product something that can somehow mislead user.

And sending e-mails about (not only) threats is pretty nice idea and definitely in near feature it will be implemented.

Thanks for your feedback!

Tomáš Heřmanský
(Product Manager of Mobile Security)