US Flights Resume After Reported Computer Glitch Resolved

Separately, UK’s Royal Mail Blames ‘Cyber Incident’ for Service Disruption
Anytime critical infrastructure gets disrupted, the first question inevitably seems to be: Was a cyberattack to blame? So it went Wednesday when the Federal Aviation Administration announced a “ground stop,” prohibiting all U.S. flights from taking off, due to an overnight system failure.
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