Security News > 2020 > April > Chinese COVID-19 Disinformation Campaign

Since that wave of panic, United States intelligence agencies have assessed that Chinese operatives helped push the messages across platforms, according to six American officials, who spoke on the condition of anonymity to publicly discuss intelligence matters.

The amplification techniques are alarming to officials because the disinformation showed up as texts on many Americans' cellphones, a tactic that several of the officials said they had not seen before.

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https://www.schneier.com/blog/archives/2020/04/chinese_covid-1.html