NHS

£92m downtime cost - NHS

Wannacry cost the NHS a total of £72m according to estimates from the Department of Health and Social Care.

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maersk

$300m downtime cost - Maersk

In June 2017, Maersk was infected with by the NotPetya ransomware outbreak.

In an Interim Report for Q2 2017 Maersk's CEO warned that the cyber attack is expected to "impact results negatively by USD 200-300m".  The entire network was down for days leading to knock-on effects to the global shipping industry.

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British Airways

£500m downtime cost - British Airways

British Airways had an IT outage over the May Bank holiday in 2017. Over £500m was wiped off the market value BA's owner IAG.Read more