Vietnamese crypto educator Tai Zen contacted Ledger in December 2025 about a suspected implant on a hardware wallet. On October 9, Ledger confirmed a security crisis involving crypto losses linked to wallets sold by CryptoBilis, an authorized reseller in Southeast Asia. One affected device was confirmed to contain an unauthorized implant. Mark Karpelès stated that Ledger should have responded to the increasing number of reports and evolving implant technology. Researcher Joe Grand identified the responsible seller as “LedgerXXX” on Lazada, which was not authorized in Thailand despite the official Ledger store on the platform.
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