Ahold Delhaize cut its profit forecast after a cyber attack. The earnings hit is now explicit, so the tape will focus on remediation costs and whether the incident spills into the rest of the sector.

What happened: Ahold Delhaize cut its profit forecast after a cyber attack. The Dutch supermarket group said last month's hack will hit sales and profit in the fourth quarter. Why it matters: The forecast cut signals that the breach is expected to affect the company's financial performance in the fourth quarter, not only its systems.

Ahold Delhaize cut its profit forecast after a cyber attack. The Dutch supermarket group said last month's hack will hit sales and profit in the fourth quarter.

The forecast cut signals that the breach is expected to affect the company's financial performance in the fourth quarter, not only its systems.