AI Agent Security & Prompt Injection Defense
Prompt injection attacks up 340% YoY and map to 6 of OWASP's 10 agentic risks. Agentic security market at $1.65B, compounding 42% a year.
Growth Overview
12-Month Trend
Growth Rate
Market Size Projection
Overview
Tools that defend AI agents against prompt injection, tool abuse, data exfiltration, and unauthorized actions taken on a user's behalf. The agentic AI security market reached $1.65B in 2026 and is projected to hit $13.52B by 2032 at 42% CAGR. Prompt injection is the defining failure mode: attacks rose 340% year over year and OWASP maps the technique to six of its ten agentic application risks. Enterprise agentic AI spending is heading toward $201.9B in 2026, expanding the attack surface faster than security teams can instrument it. Capital followed, with agentic AI security startups raising $3.6B cumulatively and more than $392M announced in the two weeks around RSAC 2026 alone.
What's Driving This Growth?
- ▸Prompt injection attacks rose 340% YoY and map to 6 of the 10 categories in the OWASP Top 10 for Agentic Applications
- ▸Enterprise agentic AI spending heading toward $201.9B in 2026, expanding the attack surface faster than security teams can monitor it
- ▸UBS Research: 53% of organizations plan to adopt agentic AI by 2026 and 83% by 2028, making agent security a procurement line item rather than a research topic
- ▸Only 8.5% of MCP servers implement the mandatory OAuth 2.1 standard, leaving the dominant agent-tool protocol largely unauthenticated
Market Signals
- ✓OpenAI acquired Promptfoo (Mar 9, 2026), a prompt-injection and LLM red-teaming startup that had raised $23M at an $86M valuation, folding automated red-teaming and compliance monitoring into its Frontier enterprise platform
- ✓Noma Security raised a $100M Series B led by Evolution Equity ($132M total) on 1,300% ARR growth for agent discovery, posture management, red teaming, and runtime protection; Oasis Security raised $120M for non-human identity governance
- ✓Agentic AI security startups have raised $3.6B cumulatively, with $392M+ announced in the two weeks around RSAC 2026; 7 of the 12 cybersecurity deals closed between Jul 15 and Aug 4, 2026 target AI agents, AI apps, or non-human identities
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