2.1 Why are hardware wallets still stolen? For example, when there is a problem with ledger, how does onekey ensure security?

First of all, one thing needs to be corrected. So far, there has not been a single case reported of users losing assets due to problems with the hardware cold wallet itself. Even if a hardware cold wallet is used, assets are still stolen for the following reasons:

1. The mnemonic phrase is leaked;

2. Asset theft caused by improper authorization.