A source told reporter Renee Dudley something she found hard to believe: that Microsoft was running tech support for the Department of Defense through China, the country’s biggest cybersecurity adversary. The arrangement was called “digital escorting.” She thought it sounded like a conspiracy theory — until she started looking into it. This is the story of what she found and how her investigation changed government policy.Read More: www.propublica.org/article/microsoft-digital-escorts-pentagon-defense-department-china-hackersSupport our journalism by donating at propublica.org/donate.