This key file is for your newly generated Arweave wallet that you must keep safe and secure. By safe and secure, we mean keeping it protected from loss or misplacement as it’s not possible to regenerate. In simpler terms: once it’s gone, it’s gone! We always recommend storing it in a safe location on multiple (at least 3) devices. We also recommend that you encrypt the file, as anyone who has access to it also has access to your wallet.