http://www.newsweek.com/2023/01/27/how-hackers-outwit-all-efforts-stop-them-its-cyber-pandemic-1774458.html

On the morning of January 11, the Federal Aviation Administration halted all airline takeoffs in the U.S. because of a glitch in a software system critical to flight safety. "There is no evidence of a cyberattack at this point," said the White House press secretary. But would officials know it if it were? And would they disclose it to the public?

Those are fair questions, given that in 2015 it took the FAA two months to disclose that hackers had planted malware in one of its computer networks. The federal government keeps tight wraps on what it knows about threats to American businesses and individuals.