A cold wallet is a crypto wallet that is not connected to the internet and does not interact with smart contracts. Because it is offline, a cold wallet is more secure against digital threats such as malware or spyware. In addition, since it does not connect to smart contracts, it also reduces the risk of malicious approvals. In simple terms, a cold wallet is used only for storing, sending, and receiving assets.
A cold wallet is particularly suitable for storing large amounts of crypto assets over the long term due to its high level of security. This is because the access key (private key) is stored offline, making it much less vulnerable to threats within the blockchain (on-chain) environment.