In an update posted on October 13, Ledger said it is asking resellers and distributors in Indonesia, Singapore, Thailand, the Philippines, Vietnam, Malaysia and Hong Kong to take its devices off the shelves while the investigation is ongoing.
Ledger said all confirmed losses involve devices sold through CryptoBilis, a reseller in the region. The company is still working to establish who tampered with the devices and at what point in the distribution chain it happened. It said it has no indication that its own infrastructure, systems, services or direct sales channel have been compromised.
Ledger's Donjon security team said the implant reads the 24-word recovery phrase from the device's screen during setup and sends it out over LTE. Anyone holding that phrase can restore the wallet and move its funds. Onchain investigator Specter has linked more than $86 million in suspected thefts to the compromise, a figure Ledger says it has not verified.
Earlier on Tuesday, retailer MediaMarkt Saturn stopped selling Ledger devices in its stores and online, with Ledger's agreement, after a customer in Germany reported an implant. No loss of funds was reported in that case. Ledger has not verified a drain linked to a device bought outside Southeast Asia.