Some Delta Airlines customers may have been stung in [24]7.ai breach. Photo: Gary Hershorn/Getty Images

[24]7.ai, an automated customer service provider used by Delta and Sears, announced Thursday that it had been breached last year.

Why it matters: Though details are currently scant, payment information for under 100,000 Sears customers and, via the New York Post, a "small subset" of Delta travelers' information may have been taken.

The timeline: [24]7.ai said the breach took place between September 27, 2017 and October 12, 2017.

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