Hitachi Ltd.

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People walk in front of the headquarters building of Hitachi Ltd., center, in Tokyo, Monday, May 15, 2017. The global "ransomware" cyberattack hit computers at 600 locations in Japan, but appeared to cause no major problems as Japanese started their workday Monday even as the attack caused chaos elsewhere. Hitachi spokeswoman said emails were slow or not getting delivered, and files could not be opened. The company believes the problems are related to the ransomware attack, although no ransom appears to have been demanded so far. They were installing software to fix the problems. (AP Photo/Shizuo Kambayashi)