Just assume all data breached...

Man, I came to that conclusion a least a decade ago. There were many reasons for that but Google was one of the single biggest contributors to my analysis of the situation as the shift became more and more obvious. 

It's kind of ironic that in the mid-eighties I was in the private sector of investigations and intelligence and I contributed to helping Experian, (then TRW), credit bureau design a system of data mining and formatting to sell to people like me and my peers. It is even more ironic that in setting up such a system that I was limiting my career potential.  That was because as of that time people seeking important investigative or intelligence information would hire someone like me to investigate on a personal or human level to gather and or interpret information. With the advent of computers gathering and sorting data, the market drifted away from my ilk to computer or electronic collected info.