UK ICO Fines South Staffordshire Water £963,900 for Cyberattack Exposing 664k Customer Records
The UK Information Commissioner's Office (ICO) has fined South Staffordshire Water Plc and its parent company South Staffordshire Plc £963,900 ($1.3 million) following a cyberattack that exposed the personal data of approximately 663,887 customers and employees. The fine represents a regulatory enforcement action against a critical infrastructure operator in the UK water sector. The incident highlights ongoing cybersecurity vulnerabilities in essential utility providers and the growing regulatory consequences of inadequate data protection measures.
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Impact verdict
Medium impact. The £963,900 fine and exposure of over 663,000 individuals' data represents a meaningful but not catastrophic cyber incident. The event is significant for cyber liability and regulatory risk lines, particularly as it involves a critical infrastructure operator, but the financial penalty is moderate in scale.
View assessment methodologyHow we grade what we know -- Known · Reported · Uncertain. Methodology →
Intelligence ledger
Each line expands in place to its underlying sourced claim.
Known4 lines
ICO fined South Staffordshire Water Plc and South Staffordshire Plc £963,900 ($1.3 million)▾
The cyberattack exposed personal data of 663,887 customers and employees▾
The fine was announced on or around 12 May 2026▾
South Staffordshire Water is a UK water supplier▾
Reported2 lines
The breach involved both customer and employee personal data▾
South Staffordshire Plc is the parent company of South Staffordshire Water Plc▾
Uncertain3 lines
The exact nature of the cyberattack (ransomware, data exfiltration, etc.) is not specified in the excerpt▾
The date of the original cyberattack is not specified in the excerpt▾
Whether remediation actions have been completed is unknown▾
Affected countries
Timeline
Lifecycle changed
monitoring → closed
Event Closed
auto_closed_monitoring_timeout
Status changed to monitoring
Auto-transitioned: no updates for 6 hours
active → monitoring
Status changed to active
remediation: existing authoritative signal
signal → active
Initial Detection
The UK Information Commissioner's Office (ICO) has fined South Staffordshire Water Plc and its parent company South Staffordshire Plc £963,900 ($1.3 million) following a cyberattack that exposed the personal data of approximately 663,887 customers and employees. The fine represents a regulatory enforcement action against a critical infrastructure operator in the UK water sector. The incident highlights ongoing cybersecurity vulnerabilities in essential utility providers and the growing regulatory consequences of inadequate data protection measures.
The Information Commissioner's Office has fined South Staffordshire Water Plc and parent company South Staffordshire Plc £963,900 ($1.3 million) over a cyberattack that exposed the personal data of 663,887 customers and employees.
Source: BleepingComputer (Trade Media) · View source
Lloyd's classifications
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