Flights grounded.. computer failure at the FAA

There is a complete system failure at the FAA, some rumors about that there was a hacking, but the official response thus far is that there is no evidence of a cyber attack. 

UPDATE 1-White House says no evidence of cyber attack in FAA outage, Biden briefed

There is no evidence of a cyber attack in the FAA system outage that grounded flights across the country on Wednesday and President Joe Bide 

FINANCE.YAHOO.COM 

A computer outage at the Federal Aviation Administration brought flights to a standstill across the U.S. on Wednesday, with hundreds of delays quickly cascading through the system at airports nationwide.

The FAA ordered all U.S. flights to delay departures until at least 9 a.m. Eastern, though airlines said they were aware of the situation and had already begun grounding flights.

Delays and cancellations accelerated rapidly, with more than 3,700 stuck on the ground around 8:30 a.m. Eastern, more than all the delayed flights for the entirety of the previous day, according to the flight tracking website FlightAware. More than 550 have been cancelled, and that number was ticking higher quickly.