Some fool at #visa this morning pic.twitter.com/oq2dbxIalq
— Jared Newbery (@JaredNewbery) June 1, 2018
In all seriousness, Visa identified the issue as a hardware problem that caused messages back to the Chip Card from Visa to fail.
What a day. One of the worst payment outages in history. How many of you fraud analyst have ever written a rule that declines too many transactions? Can you imagine if you were ever responsible for something like this?