SHANGHAI — The wholly owned U.S. subsidiary of the Industrial and Commercial Bank of China (ICBC) said it had been hit by a ransomware attack that resulted in “disruption to certain [financial services] systems” on Wednesday U.S. Eastern Time.

ICBC Financial Services, whose services include clearance of securities such as U.S. Treasurys and stocks, said in a statement that it has “successfully cleared U.S. Treasury trades executed on Wednesday and repo financing trades done on Thursday.”

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