Tomorrow it might become opt-out. But I still wouldn't trust Apple 100% : we know that they were among the companies silently cooperating with the NSA, and the

Tomorrow it might become opt-out. But I still wouldn't trust Apple 100% : we know that they were among the companies silently cooperating with the NSA, and the potential for backdoors in their software isn't nil. (Whether you should consider this as a real threat depends on your circumstances of course.)