The nationwide ground stop is a cyberattack, not a telecom outage
The FAA called it a temporary telecommunications outage. A lot of people have already decided that has to be cover for a cyberattack. That's a serious claim, and so far the public statements don't back it. The Verge: https://www.theverge.com/news/1033489/faa-ground-stop
What the receipts say: Receipts Official sources never set the Bro-Meter.