Southern Water says Black Basta ransomware attack cost £4.5M in expenses

Meanwhile, analysis of the leaked internal chat logs from the Black Basta ransomware gang revealed that the water treatment company allegedly proposed to pay the ransomware actors £750,000 ($950k) on February 12, 2024. United Kingdom water supplier Southern Water has disclosed that it incurred costs of £4.5 million ($5.7M) due to a cyberattack it suffered in February 2024. Southern Water is a private utility company in southern England, providing water services to 2.7 million customers and wastewater services to over 4.7 million customers across Kent, Sussex, Hampshire, and the Isle of Wight. For perspective, the amount is the same as Southern Water paid for pollution management operations last year, not accounting for the reputational damage, legal fees, and potential regulatory scrutiny that may accompany cybersecurity incidents. Roughly a year back, Southern Water announced that it suffered a security breach, which didn't impact its operations, financial systems, or customer-facing systems. Although the attackers initially demanded a payment of $3,500,000, by the end of February 2024, the company's entry was removed from Black Basta's extortion site, indicating that the two might have reached some agreement. Southern Water claims that it has contracted cybersecurity experts to continually monitor the dark web for data leaks impacting them or their clients, which has not occurred yet. The company supplies 570 million liters of water through a 13,973 km network daily and manages 1,522 million liters of wastewater via a 40,058 km sewer system. Bill Toulas Bill Toulas is a tech writer and infosec news reporter with over a decade of experience working on various online publications, covering open-source, Linux, malware, data breach incidents, and hacks. "In February 2024 we announced that data from a limited part of our server estate had been stolen through an illegal intrusion into our IT systems," reads the report.

This Cyber News was published on www.bleepingcomputer.com. Publication date: Wed, 26 Feb 2025 23:55:13 +0000

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Southern Water says Black Basta ransomware attack cost £4.5M in expenses

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