That would be a privacy nightmare. Where would all that data be sent to? And how could you be sure the phone only triggers when there really is an attack going

That would be a privacy nightmare. Where would all that data be sent to? And how could you be sure the phone only triggers when there really is an attack going on? Who would have access to the data? And anyway, isn't it a little late when the attack is already taking place? (I mean, you want to prevent it happening in the first place, don't you?)