Enterprise Security Risks From Agentic and Generative AI Deployments
Enterprises are rapidly integrating agentic AI assistants with high-privilege connections to ticketing systems, source code repositories, chat platforms, and cloud dashboards, enabling actions such as opening pull requests, querying internal databases, and triggering automated workflows with limited human oversight. Reporting citing Cisco’s State of AI Security 2026 indicates many organizations are moving forward with these deployments despite low security readiness, expanding exposure across model interfaces, tool integrations, and the broader supply chain.
Multiple sources highlight that attacker techniques against AI systems are maturing, particularly prompt injection/jailbreaks and multi-turn attacks that exploit session state, memory, and tool-calling to drive unsafe actions or data leakage. Separately, adversaries are using generative AI for deepfake-enabled social engineering (including video/voice impersonation to bypass identity verification and authorize sensitive actions) and for scalable brand impersonation via malicious ad campaigns; one widely cited example involved Arup, where a deepfake video call led to authorization of a fraudulent HK$200 million transfer. Overall, the material is primarily risk and threat reporting (not a single incident), emphasizing that AI systems’ contextual behavior and privileged integrations create new control gaps that traditional security testing and defenses may not detect.
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How this story unfolded
6 events from the most recent confirmed update back to the earliest known activity.
Industry reporting highlights broader criminal use of generative AI
By February 2026, industry reporting described attackers using generative AI to scale social engineering, brand impersonation, CAPTCHA evasion, voice-biometrics attacks, and emerging attacks on AI agents and MCP-connected infrastructure. Experts noted that criminals were primarily using AI to automate language- and workflow-heavy tasks rather than consistently discovering novel vulnerabilities end-to-end.
Security guidance shifts toward MCP-aware and PQC-aware AI testing
By February 2026, security guidance emphasized that traditional scanning and fuzzing were insufficient for stateful, tool-using Model Context Protocol environments and recommended testing full conversation flows, tool-calling logic, and data-exfiltration paths. The same guidance also called for validating post-quantum cryptography deployments against downgrade, fallback, and performance-failure scenarios.
Cisco reports low enterprise readiness for securing agentic AI
Cisco's State of AI Security 2026 found that most organizations planned to deploy agentic AI into business functions, but only 29% said they were prepared to secure those deployments. The finding underscored a widening gap between adoption and security readiness.
Malicious GitHub issue via MCP server hijacks agent and exfiltrates data
A documented attack showed that a malicious GitHub issue could embed hidden instructions delivered through a Model Context Protocol server, causing an AI agent to be hijacked and private repository data to be exfiltrated. The case highlighted indirect prompt injection risks in tool-connected agent environments.
Deepfake video call scam tricks Arup employee into large transfer
In the Arup fraud case, a finance worker approved a fraudulent HK$200 million transfer after joining a videoconference that used deepfake impersonation of the company's UK-based CFO. The incident became a prominent real-world example of generative AI-enabled business fraud.
Prompt-injection and jailbreak attacks mature across AI models in 2025
By 2025, prompt-injection and jailbreak techniques had advanced significantly, with multi-turn attacks reportedly achieving up to 92% success across eight open-weight models. This marked a broader escalation in practical offensive techniques against enterprise AI systems.
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Quantum-Resistant Identity and Access Management in Model Contexts | Read the Gopher Security's Quantum Safety Blog
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Open sourceEnterprises are racing to secure agentic AI deployments - Help Net Security
helpnetsecurity.com
Open source13 ways attackers use generative AI to exploit your systems | CSO Online
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May 1, 2026
Security and Risk Implications of Agentic AI and AI-Generated Code in the Enterprise
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Mar 21, 2026