Pi Security announced a $35M round (June 10) focused on agentic AI security — one of a cluster of June raises (also F2 AI $14M for deal-underwriting agents led by Highland Capital, Trustap $10M for autonomous marketplace transactions, Concentrate AI $5.1M for an LLM gateway) showing capital rotating toward the agent security and infrastructure layer. The through-line is that the money is now chasing the plumbing — identity, gateways, guardrails — rather than another chat wrapper. For builders, expect more commercial tooling aimed at the exact MCP/gateway risks surfacing in this issue.