Not sure what you mean. Nothing is secure, ever, in a binary sense of being just one thing or the other. It's all a balance between level of security and level of practical usability. Often we've made things easy to use but hard to secure. Like SSNs. But regardless of the source of an attack, the reward for breaking 1 billion targets on the same system vs 1.3 million on a different system is probably much higher. So the inconveniences of more secure systems must be weighed in context of the desirability of the information within them. More attractive targets need more secure, less easy to use, systems.