[Ledger CEO Hits Back at Former Mt. Gox CEO: You're Not a White Knight, Speak Based on Facts Instead of Baseless Speculation] Ledger CEO Pascal Gauthier responded to former Mt. Gox CEO Mark Karpelès' warnings about hardware implant security risks, questioning his stance and stating that Ledger has always done its utmost to protect users. Pascal Gauthier acknowledged the challenges of security work and appreciated Karpelès' attention to the matter but urged him to speak based on known facts and avoid speculation. He also sarcastically remarked, 'Come on, you're not some white knight. Be realistic.'