The Security Retainer Shift: Why Agentic Risk Turns Protection Into Recurring Agency Revenue

Client systems now run autonomous agents that act without a human in the loop, and the failure modes are documented rather than hypothetical. Agencies that sell security as a one-time audit lose the renewal; agencies that sell continuous threat modeling plus incident response convert a trust obligation into a monthly line item. The liability question is the whole business model, so scope it in writing before you price it.