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The Harness Is the Product and the Attack Surface | The Agentic Stack
Strands shipped a harness on September 21st, 2026 with a headline claim of frontier performance at 28% lower token cost. Three days later, Dark Reading reported a prompt-injection vulnerability in the agentic app Manus that could have enabled data theft and compromise. This episode connects the harness-as-product shift to the harness-as-trust-boundary problem: if tool output, intermediate reasoning and persistent memory all count as attacker-controllable inputs — as OWASP's 2026 LLM01 entry now states — then the layer you adopt to manage context, tools and loop control is also the layer where…
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