## Details Welcome to the DevSecOps London Gathering November Event on Wednesday 18 November! We bring you two more great speakers, as well as the usual conversations, pizza and beer! 📍 **Hosted at Adaptavist, Telephone House, 69-77 Paul Street, London, EC2A 4NQ** 📅 **Wednesday, 18 November 2026** 🕕 **6:00–8:00 PM** ## **Talk** **Abstracts:** **Talk 1 - Nobody inspects hop three — securing agent-to-agent messages** Multi-agent AI pipelines split work across orchestrator, researcher, and writer agents — but most teams still only inspect the user prompt. Indirect injection arrives inside web fetches and inter-agent handoffs, and the last agent in the chain often holds the credentials. This session tells that story live: an attack that succeeds without protection, then the same pipeline secured with AgentGuard — open-source Python middleware (`pip install inter-agent-guard`) that inspects every hop with rules, optional ML scoring, Ed25519 trust attestation, YAML capability manifests, and a tamper-evident audit log. You will see which defences are deterministic and deployable today (signatures and policy) versus probabilistic (ML with published limits). The demo uses IntelBrief, a three-agent LangGraph pipeline: poisoned web content and forged orchestrator messages blocked at the tool boundary and signature layer. Audience takeaway: deploy identity and capability controls immediately; treat ML as defence in depth with honest metrics; audit every block decision. **Speaker Bio**: Umme Nizba designed and built AgentGuard, an open-source firewall for the messages AI agents send each other — inspecting content, verifying Ed25519 signatures, enforcing YAML capability policy, and logging every decision in a tamper-evident audit trail. The library ships on PyPI and GitHub (v1.2.0) with IntelBrief, a live three-agent demo for indirect injection and impersonation attacks. They hold an MSc in Information Security from Royal Holloway University of London and work as a software engi

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