September's attack on Jaguar Land Rover (JLR) is set to be the most expensive cyber event in British history, according to figures released by the Cyber Monitoring Centre (CMC).

Researchers at the center said they place the UK financial impact at between £1.6 billion and £2.1 billion, with £1.9 billion the most likely figure. That doesn't include any possible ransom.

Notably, the long-term financial impact of the incident could be higher, providing operational technology (OT) turns out to have been significantly impacted, or if there are unexpected delays in bringing production back to previous levels.

The estimate is based on the substantial disruption to JLR’s own manufacturing, to its multi-tier manufacturing supply chain, and to downstream organizations including dealerships.

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