Forrester Reports on Operational Risks Around Agentic AI
A new Forrester report predicts that agentic AI will cause a public breach in 2026 that will lead to employee dismissals. The report outlines five key shifts that CISOs should prepare for as cybersecurity threats become more autonomous, geopolitical and fragmented.
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Paddy Harrington, senior analyst at Forrester, said security leaders need to rethink how they deploy and govern agentic AI automation before it creates systemic failure.
“When you tie multiple agents together and you allow them to take action based on each other,” Harrington said. “At some point, one fault somewhere is going to cascade and expose systems.”
The report, Predictions 2026: Cybersecurity and Risk, also forecasts:
- Five governments will nationalize or restrict telecom infrastructure, forcing the reassessment of compliance and connectivity;
- The European Union’s known exploited vulnerability database could surpass its U.S. counterpart in speed and influence;
- Quantum security spending will rise sharply as post-quantum encryption deadlines approach;
- A high-profile merger between an aging IT vendor and a struggling cybersecurity firm will fail, creating disruption for enterprise customers.
In this video interview with Information Security Media Group, Harrington also discussed:
- Why agentic AI poses an immediate operational risk to enterprises;
- How CISOs can respond to cross-border fragmentation;
- What leaders should ask vendors about quantum readiness and platform stability.
Harrington, a senior analyst at Forrester advising security and risk professionals, focusing on endpoint security across a range of platforms including desktop PCs, internet-of-things devices, connected vehicles and operational technology. His research includes the endpoint’s impact on the security of business data and operations in light of the proliferation of interconnected devices and the evolving work environment.

