The cyberattack that spread malicious software around the world, shutting down networks at hospitals, banks and government agencies, was stemmed by a young British researcher and an inexpensive domain registration, with help from another 20-something security engineer in the U.S.

Britain's National Cyber Security Center and others were hailing the cybersecurity researcher, a 22-year-old identified online only as MalwareTech, who—unintentionally at first—discovered a "kill switch" that halted the unprecedented outbreak.

Read More: https://phys.org

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