From Russia, with malware

What Russia hacked this time. Why America’s biggest companies are laying people off during a pandemic – while boasting record profits. And new coronavirus tests you can take at home.
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The U.S. government spent billions on a system for detecting hacks. The Russians outsmarted it, as national security reporter Ellen Nakashima explains. 
Some of America’s biggest companies have made a killing off the pandemic. But their record profits haven’t stopped them from laying off thousands of people, says corporate accountability reporter Doug MacMillan. 
How do home tests for coronavirus work? Health and science reporter William Wan explains.
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