According to U.Today, Ledger Chief Technology Officer Charles Guillemet, in response to Binance's security warning regarding an iOS vulnerability, reminded cryptocurrency holders not to store sensitive information such as wallet seed phrases on their mobile phones. He believes that the cost of exploiting such vulnerabilities is decreasing. The report also stated that it remains unclear whether the update released by Apple on November 9 completely patches the vulnerability, and no cryptocurrency thefts definitively linked to this vulnerability have been confirmed.