indirect-prompt-injectionagent-data-injectiontrust-boundary-violationweb-agentscoding-agentsrcesupply-chainmetadata-spoofingASI01 · Goal HijackingAML.T0051AML.T0054Surface: Tool LayerPropagation: Single Hop
Researchers identify a new class of indirect prompt injection called Agent Data Injection (ADI), where attackers disguise malicious payloads as trusted metadata or tool-call context rather than as explicit instructions, causing agents to take unintended actions. This bypasses existing instruction-injection defenses and was demonstrated against real web agents (Claude in Chrome, Antigravity, Nanobrowser) and coding agents (Claude Code, Codex, Gemini CLI), leading to arbitrary clicks, remote code execution, and supply-chain risks. This is a credible, well-documented research finding with proof-of-concept impact against widely used production agents.
Updated Jul 7, 2026