Your private key will not upload to FoxWallet backend, your funds are safe
FoxWallet will take good care of your view key, no one else can get your view key
Balance and transaction history api are well protected, your privacy remains
The purpose of uploading the view key to the backend is to allow users to obtain transaction records and balances faster, otherwise users need to synchronize all blocks and decrypt transactions locally, which will consume huge calculations and network transmission. The design of FoxWallet can bring users a better experience. At the same time, please rest assured that we will keep your view key safely and will not leak it to any third party.
FoxWallet Extension is full open-source, and syncs data locally with NOview key uploaded.