TLDR

Hot wallets offer convenience but face cyberattack and hacking risks.
Cold wallets are safer online but can be lost, stolen, or damaged.
Self-custody gives control but requires full responsibility for keys and seed phrases.
Third-party custodians hold keys but may rehypothecate or commingle assets.

The U.S. Securities and Exchange Commission (SEC) has released an investor bulletin detailing how retail investors can safely store and access crypto assets. 

The guide explains risks associated with different types of crypto wallets and custody methods, while providing actionable tips for protecting digital holdings.

The SEC stresses that crypto wallets themselves do not hold digital assets. Instead, they secure the private keys needed to access crypto holdings. 

Understanding the difference between hot and cold wallets, managing self-custody versus third-party custody, and protecting seed phrases are essential steps for safeguarding crypto investments.

Hot and Cold Wallets: Convenience Versus Security

Crypto wallets generate two cryptographic keys: a private key for authorizing transactions and a public key for receiving assets. 

Losing a private key means losing permanent access to the crypto in the wallet, making secure storage crucial.

Hot wallets are internet-connected, providing fast access for transactions. Their connectivity, however, exposes users to hacking, malware, and other cyber threats. 

Cold wallets are offline devices, such as USB drives or external hardware, offering higher security against online attacks. Physical loss or device damage, though, can permanently erase crypto assets.

Investors are also advised to store seed phrases securely. These backup phrases allow wallet recovery if private keys are lost or compromised. Failing to protect a seed phrase can lead to irreversible loss.

Choosing Between Self-Custody and Third-Party Custody

Self-custody gives investors full control over their crypto, but it comes with complete responsibility for securing private keys and seed phrases.

Setting up wallets, managing transactions, and protecting access requires technical knowledge and ongoing diligence.

Third-party custody involves delegating control to professional custodians, including crypto exchanges and specialized storage providers. 

These custodians handle private keys and may use combinations of hot and cold wallets. Investors must assess whether custodians rehypothecate or commingle assets and understand potential consequences.

Key questions when selecting a third-party custodian include the custodian’s security protocols, insurance coverage, fees, and regulatory status. 

Investors should confirm how assets are stored, who can access them, and what privacy protections are in place.

Practical Tips for Protecting Crypto Assets

The SEC bulletin emphasizes several steps for safeguarding crypto holdings. Investors should never share private keys or seed phrases, keep their asset information private, and remain alert to phishing scams. 

Using strong passwords and multi-factor authentication can further protect online accounts.

Researching custodians is essential to reduce risk. Understanding how third-party providers operate, including how they store and secure crypto assets, helps investors avoid unexpected losses. Monitoring wallet access and security practices, along with keeping digital and physical recovery methods safe, improves overall protection.

By understanding the risks of hot and cold wallets, self-custody, and third-party custody, investors can make informed decisions about safeguarding their digital assets. 

Awareness and careful management are key to ensuring crypto remains secure in a rapidly evolving market.

The post Is Your Crypto Really Safe? SEC Warns Investors on Wallet and Custody Risks appeared first on Blockonomi.

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Filed under: Bitcoin - @ December 14, 2025 2:20 pm