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Case Study

Establishment of a group-wide OT-Cyber-Security for an Energy-Contractor

230700-03

From a lack of Governance to a resilient OT-Security Organization

Following a change in ownership, an energy contractor operating across Europe faced the challenge of establishing a group-wide OT-cybersecurity function. The absence of centralized governance, inconsistent security standards, and the increasing connectivity of critical OT assets made it necessary to establish a centralized OT-security organization with clearly defined processes, harmonized standards, and centralized security monitoring across the group.

q

Company

  • Energy and environmental services group focusing on heat and utilities supply
  • Operates several thousand decentralized energy plants across multiple European countries
  • Revenue in the low single-digit €b range, workforce in the low four-digit range
p

Challenge

  • After investor change, transition from decentralized entries to a holding with central functions
  • Only selective cyber security in place, no group-wide governance or OT security framework
  • Critical OT assets facing rising risk through connectivity and tighter regulation
m

Goals

  • Build an autonomous security unit with clear and dedicated teams
  • Define building OT security standards and processes for all business models
  • Implement group-wide monitoring of IT and OT security events
n

Measures

  • Group-level risk and gap assessement focusing on OT security
  • Design of the target security organization with governance, operations and OT security
  • Development of OT security policy and technical requirements aligned to IEC 62443
  • Selection and implementation of a managed SOC provider including handover to operations
x

Results

  • Creation of a strong security department with mainly external specialist hires
  • Implementation of OT DMZ zones based on Purdue model and start of NDR sensor rollout
  • Significantly improved visibility of OT threats and faster incident response
  • Cyber security embedded into group steering and investment planning

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