According to CoinMeta, Ledger SAS is reviewing its device sales policies and procedures, as well as evaluating anti-tampering protection measures, in response to the incident where spyware was implanted in hardware wallets, resulting in the theft of $90 million in cryptocurrencies. Chief Technology Officer Charles Guillemet stated that users who suspect their devices have been tampered with should first refer to Ledger's security operation guidelines and send the suspicious devices to Ledger for inspection.