Several european banks are also having issues with their login sites and online services. Backends are working though. I know, it's far fetched to throw them in the same bucket, and I won't, but it feels like there is happening some kind of reorganization on the net, which in the worst case would be some kind of global state-sponsored MITM-layer getting set up, maybe to prepare for new techs like 5G and TLS1.3.
If I were going to buy into any theory other than coincidence my bet would be on an emergency patch situation where we're seeing the rushed deployment.
