PwC's Global Digital Trust Insights survey, released at Sibos 2026, found 50% of security leaders name preparedness for cyberattacks on AI systems as their biggest gap — and in financial services specifically, attacks targeting AI systems are the threat organisations feel least prepared for. The survey covered 3,934 business and technology leaders across 71 countries. Despite the gap, 86% of respondents expect cybersecurity budgets to rise and 58% place AI among their top cyber budget priorities; PwC also reports a rise in managed services for AI and cloud security as overwhelmed in-house teams turn to partners. A structural concern is the absence of an agreed ownership model for AI governance and risk — responsibility split across CIOs, CTOs, CISOs and dedicated AI leaders. The finding dovetails with this week's reported use of AI agents in the South Korean bank hacks.

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