One-fifth of CME clearing members hit by Ion hack

Advisory committee heard CFTC believed it could “play a more direct role” in cyber security practices

Around 20% of all CME Group clearing members were affected by the Ion ransomware event, an executive at the clearing house has told a public hearing.

Ion Group, which supplies software used to process cleared derivatives trades, had to shut down access to some of its services on January 31 after hackers seized control of its servers.

The outage affected 42 Ion clients, forcing some to process trades manually and delay regulatory reporting. CME has 67 clearing members.

Julie Holzrichter, CME

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