A cold wallet is used offline for storing bitcoins or other cryptocurrencies. With a cold wallet, also originally known as cold storage, the digital wallet is stored on a platform not connected to the internet, thereby protecting the wallet from unauthorized access, cyber hacks, and other vulnerabilities that a system connected to the internet is susceptible to.
Cold storage methods are useful for individual investors, but cryptocurrency exchanges and companies involved in the crypto space also make use of this type of wallet.
Cold storage also can refer more broadly to other modes of operation for storing inactive data, such as data for regulatory compliance, video, photographs, and backup information.
Most cryptocurrency wallets are digital, but hackers can sometimes gain access to these storage tools in spite of security measures designed to prevent theft.
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