How to secure my keys?

Imagine the blockchain is a padlock and your private/secret key or mnemonic seed is the key to gain access to the balance in your wallet. It is highly recommended to backup your key/seed to someplace only you can access it. For example on a text file inside a password-protected ZIP/RAR archive, stored on multiple (preferably encrypted) USB drives. Secondly, since your offline wallet stores your keys as well, it would be wise to consider running it in a secure environment such as a VM and/or air-gapped laptop.

Below are some popular methods of protecting your keys. As a general rule, don't over-complicate things and avoid single points of failure. For example, forgetting your password or storing your keys on a single USB drive with the potential of loss or failure. In such cases, you may lose access to your funds without any means for retrieval.

Ways to protect your keys and wallet:
- Written/printed paper copies in safe storage
- Password protect files
- Encrypted USB drives
- Use of public key infrastructure (PKI)
- Use trusted password software (e.g. KeePass or BitWarden)
- Cloud storage with sufficient security measures
- Run your wallet inside a Virtual Machine
- Run your wallet on an air-gapped device (e.g. on a restricted laptop on a separate LAN)
- Hardware wallet (e.g. Ledger)
Here is an article providing a comparison of hardware wallets:

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