Ledger merged code switching on its multichain sign reporter on Oct. 8, approximately one month before Ambire developer Kaloyan Kosev publicly raised concerns about the change on X. The modification affects how Ledger's signing infrastructure handles transaction data across multiple chains. Ledger's security research team, Donjon, stated that server lookups are essential for enabling Clear Signing functionality. The disclosure highlights ongoing scrutiny of hardware wallet firmware changes and their potential impact on transaction transparency for end users.