This presentation introduces a security architecture for Lightning nodes that combines Multi-Party Computation (MPC) wallets with validating signing (based on VLS) to eliminate the fundamental weaknesses of traditional Lightning deployments.

Lightning nodes are inherently hot wallets - they must keep funds online inside channels, often at significant scale. This creates a critical attack surface: if a node is compromised, an attacker can either steal private keys or trick the node into signing malicious channel states and draining funds.