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Water Utility Co. Still Paying the Breach Price a Year Later

ID: d9bd5b72-1f8e-5c1a-96fa-44efad06277b

STIX ID: report--d9bd5b72-1f8e-5c1a-96fa-44efad06277b

Feed Name: Dark Reading

Threat Score
75/100

Date Published: 2025-02-26

Date Updated: 2026-04-21

Author: Kristina Beek, Associate Editor, Dark Reading

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Southern Water confirmed a ransomware breach by the Black Basta group that impacted approximately 5–10% of its 2.7 million customers, prompted notifications and Experian credit monitoring for victims, and resulted in about £4.5M in incident response costs; leaked gang chats suggest an initial $3.5M demand and a potential $750,000 negotiated figure though payment has not been confirmed.

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