Custody: Cold vs Hot Wallets

When storing crypto assets, you must choose between two main types of wallets: cold wallets and hot wallets. Each option offers a different balance of security and convenience.

Cold wallets are storage solutions that keep your private keys completely offline. This can include hardware wallets, paper wallets, or even a USB drive that is never connected to the internet. Because cold wallets are not exposed to online threats, they are highly secure against hacking and cyberattacks. However, they are less convenient for frequent transactions, as you must physically access the device or paper to move your assets.

Hot wallets, on the other hand, are connected to the internet. These include software wallets on your phone or computer, browser-based wallets, and wallets provided by crypto exchanges. Hot wallets are convenient and allow you to quickly access or trade your crypto, but this online access makes them more vulnerable to hacks, phishing, and malware. For this reason, hot wallets are usually best for holding smaller amounts or assets you plan to use or trade regularly.

You will need to consider your own priorities: if your main concern is keeping your crypto as safe as possible, especially for long-term storage, a cold wallet is typically the better choice. If you need easy, frequent access to your assets, a hot wallet may be more practical, but you should be aware of the increased risks.

Suppose you have a significant amount of Bitcoin you wish to hold for several years as a long-term investment. You decide to use a cold wallet—a hardware device that never touches the internet—to store your private keys. This way, your Bitcoin remains safe from online threats, and you only need to access the wallet if you plan to move or sell your holdings.

Meanwhile, you keep a smaller amount of Ethereum in a hot wallet on your phone for daily use and quick trades. This setup gives you fast access to your Ethereum, but you know the risk is higher if your phone is compromised. By using both types of wallets, you balance security and convenience, with your most valuable assets protected by the cold wallet.