Payday from hell as several UK banks report major outages (theregister.com)

Multiple UK banks are simultaneously reporting outages on their online banking sites and apps. Interestingly, they all seem to have the exact same message of their websites about this.

None of the reporting on this seems to report a cause for what might be behind this. A concerted DDoS campaign? Failure of some shared common facility? Nation-state-level hacking?

Earlier submission of the same story:

https://news.ycombinator.com/item?id=43204149

Definitely a better article than the other dupe. If only one of the two dupes should reach the front page, this one should be it.