Great Lakes Insurance SE (GL 2023 FORM 10-K) discloses its cybersecurity risk management strategy under Item 1C. The company states it has not experienced a cybersecurity incident resulting in a material adverse effect on its business, financial condition, or results of operations. The filing details proactive risk management, including ERM, MITRE ATT&CK mapping, and third-party vendor assessments, but confirms no actual breach occurred.