Biden administration moving to address a global compromise by Chinese and other hackers of Microsoft email servers

The Biden administration is moving to address a global compromise by Chinese government-sponsored hackers of Microsoft email servers affecting at least 30,000 public and private entities in the United States alone, according to U.S. officials and people familiar with the matter. So far, U.S. officials say there is no sign that federal agencies or major defense contractors have been hacked in the campaign that researchers believe began as far back as January, but they fear it could spiral into a crisis crippling many small and midsize businesses and state and local government agencies — those least able to afford it.The…