Aon plc released its 2025 Cyber Risk Report on June 17, 2025, revealing that cyber events causing reputation risks can result in an average of 27 percent drop in shareholder value. This highlights the growing financial and reputational stakes of cyber risk for organizations. The report analyzed more than 1,400 global cyber events to identify which types of attacks are most damaging.
Brent Rieth, global cyber leader at Aon, emphasized the importance of proactive risk mitigation, stating that organizations investing in preparedness are better positioned to avoid fallout. The report builds on Aon's 2023 research, which showed a 9 percent decline in shareholder value following major cyber incidents. While cyber insurance can transfer some financial exposure, reputation risk remains largely nontransferable, making proactive management essential.
The report also highlights the growing challenge of managing uninsurable risks. Aon's research draws on proprietary data from its Cyber Quotient Evaluation platform, which streamlines the cyber insurance intake process and provides actionable insights into cyber exposures and insurability. This reinforces Aon's unique position to support clients through complex cyber challenges.
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