FILE - The Microsoft logo in the Mobile World Congress 2023 in Barcelona, Spain, on March 2, 2023. U.S. officials say state-backed Chinese hackers foiled Microsoft's cloud-based security to break into unclassified U.S. government email systems at an unspecified number of agencies including the State Department. The extent of the hack was not immediately clear, but a person familiar with the investigation said U.S. military and intelligence agencies were not among those impacted. (AP Photo/Joan M

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