Maersk
Security incident.

What the evidence shows.

The company described system shutdowns, manual workarounds, lost volumes and extraordinary IT and operations costs. Its Q2 2017 investor presentation explicitly characterized this as an expected impact range.

What the number means.

Estimated business impact, not stolen money or ransom. The range is more meaningful than a single point figure.

How to test resilience.

Software supply-chain pathways, segmentation, restore capability and continuity of critical operating systems.