> Over a dozen airport websites were impacted by the "denial of service" attack, John Hultquist, head of intelligence analysis at cybersecurity firm Mandian, told ABC News. That type of attack essentially overloads sites by jamming them with artificial users.

That's not a "senior official"; "official" implies government, that's a company.

Yes, I would like to know the government agency official providing this information.

>” Killnet," a pro-Russian hacker group, is believed to be behind the attack, according to Hultquist. While similar groups have been found to be fronts for state-backed actors, Hultquist said there is no evidence the Russian government was involved in directing this attack.

What evidence supports this? IMO it's coming from that unspecified official. And yes, I think evidence needs to be provided before claims are made. They're just saying "I think it's these guys" ... because?