A mnemonic is a private key that is not protected by any encryption. Once someone has received your mnemonic, it is equivalent to controlling your wallet. When using mnemonics, you need to pay attention to the following points:
1. After creating the wallet, be sure to back up the mnemonic in time.（Backup wallet Tutorial）
2. When backing up the mnemonic, try to use physical media backup, such as handwriting on a piece of paper, and then collecting the paper. Do not use screenshots whenever possible
3. To ensure that the backup mnemonic is accurate, the proofreading mnemonics are correct multiple times, and you can use other wallets that support mnemonics, import the mnemonics you backed up, and verify that the backup mnemonics are correct.
4. Be sure to keep the mnemonics you backed up properly. First, do a good job of network isolation. Second, you must take measures to prevent loss.