UPDATED Oct. 26 with news that the spread of the malware seems to have stopped.
A new ransomware worm dubbed “Bad Rabbit” began spreading across the world Tuesday (Oct. 24), and it appeared to be a much-modified version of the NotPetya worm that hit eastern Europe in June.
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Bad Rabbit hit corporate networks in Russia and Ukraine especially hard, according to multiple reports, and there were isolated reports of infections in Turkey, Bulgaria, Japan, Germany, Poland, South Korea and the United States by Tuesday evening.
The U.S. Computer Emergency Readiness Team (US-CERT), run by the Department of Homeland Security, issued an alert but did not specify whether any infections had been detected in the U.S.