2026-05-23 · ledger
Ledger published a new guide on agentic AI security that treats hardware confirmation as the only reliable trust anchor. The article argues that as agents gain access to money, credentials, and identity, security has to move from software promises to physical enforcement.
Ledger frames agentic AI as a threat model where agents can perform financial or identity-bearing actions without human approval at every step. The post says agents should propose actions, humans should sign, and hardware should enforce the final decision.
If an autonomous agent is tricked into executing transfers or exposing credentials, the loss is immediate and often irreversible. The bigger risk is not just theft, but the permanent loss of control over keys, accounts, or identity-linked systems that were assumed to be safe.
Cold storage works because the signing authority stays offline and requires physical confirmation before value moves. That same design principle is why hardware-backed custody is still the best fallback when software agents, cloud services, or browsers become untrusted.
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