Trillion Dollar Security Day at Devconnect

Security practitioners from across the Ethereum ecosystem gathered in Buenos Aires for Trillion Dollar Security Day, an in-person working session focused on what it would take for Ethereum to operate securely at trillion-dollar scale. Participants represented every major layer of the stack: L1, L2, wallets, interoperability, infrastructure, privacy, on-chain systems and off-chain services. The meeting goal was to assess current realities, identify gaps, and define actionable next steps.

Key Ideas

Cross-layer patterns reveal structural weaknesses - Across all seven layers, several themes appeared repeatedly: security is still treated as a milestone rather than a continuous discipline; trust assumptions are rarely communicated clearly to users; critical security tooling lacks sustainable funding; and coordination failures (not cryptography!) remain the dominant source of risk. These patterns highlight that Ethereum's security challenges are as much organizational as they are technical.
Each layer surfaced concrete, near-term priorities - Participants produced a detailed map of issues and next steps.
In-person coordination accelerates alignment - Participants emphasized that face-to-face discussion enabled faster convergence on standards, tooling needs, and shared priorities than asynchronous channels typically allow. The event also highlighted the need for a continuously updated, ecosystem-wide view of Ethereum's security posture as the system grows more complex.

Why It Matters?

The gathering reflects a maturing ecosystem recognizing that trillion-dollar security depends on sustained coordination, shared standards, and investment in public-goods infrastructure. The insights from Buenos Aires feed directly into the Ethereum Foundation's One Trillion Dollar Security initiative, reinforcing a long-term strategy where security is treated as an evolving, cross-layer responsibility rather than a set of isolated fixes. The emphasis on explicit trust assumptions, sustainable tooling, and stronger coordination frameworks points toward a future where Ethereum's resilience is built as much through governance and collaboration as through technical innovation.