In 2025, over $3.4 billion was reportedly stolen from crypto wallets—a record high.
Storage security for cryptocurrency is a growing concern among traders of digital currencies like Bitcoin, Ethereum, and other altcoins. While many developers of crypto wallets are constantly working to stay ahead of the sophisticated capabilities hackers possess, many industry experts fear the number of theft incidents for crypto wallets will continue to rise—along with the cumulative totals that get stolen—each year.
Howard Greenberg is a pioneer in early blockchain development, and specializes in trading cryptocurrency. By doing so, he’s also very knowledgeable on secure storage methods for digital currency.
On Friday’s MarketMinds episode, Howard guest hosted, and covered the topic of Custodial vs Self-Custodial Wallets.
He spent part of this episode covering his “Golden Rule” for seed phrase safety.
For context, seed phrase safety is the protocols and actions taken to secure the 12–24 word master password that controls a crypto wallet, ensuring it doesn’t get exposed to attackers. Howard breaks down the different components of his “Golden Rule” for seed phrase safety, and why he believes these measures can prevent digital theft of crypto wallets.
The analysis, insights, and strategies shared by Prosper Trading Academy’s coaches in Prosper Insider are strictly for educational and informational purposes only. All content reflects the personal opinions of the coaches and should not be construed as specific investment advice or recommendations. Any examples discussed are illustrative in nature and do not represent actual live trade signals or instructions to buy or sell securities. Trading involves risk, and individuals should carefully evaluate their own financial situation before making investment decisions.
Howard covers:
- The key points of his “Golden Rule” for seed phrase safety
- His two Dos and two DONTs for seed phrase safety
- Who (outside of yourself) should know your seed phrase password
- Most secure methods for storing the password
- How (and where) you should record your seed phrase password

