#199 - What Aussies Need To Do To Protect Their Bitcoin After The ColdCard Hack

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After the ColdCard hack drained more than $150 million in Bitcoin, Matthew sits down with Andrew & Bayani, two of Australia’s leading Bitcoin security experts to break down what really happened, who’s at risk, and what Aussies must do now to protect their stacks. This episode covers the vulnerability, the scale of the breach, and the practical custody steps every Bitcoiner should be considering.

◼️ How the ColdCard PIN flaw exposed thousands of wallets

◼️ Why randomness and entropy matter for Bitcoin security

◼️ The real risk to single‑sig holders and why passphrases bought time

◼️ Multi‑sig, guided custody, and how Bitcoin Advisor structures protection

◼️ What Matthew changed after the hack, and why

◼️ How Aussies should secure SMSF Bitcoin, personal stacks, and family vaults

Timestamps:

00:00:00 - Introduction

00:00:31 - Guest Introduction: Andrew and Bayani

00:00:53 - Details of the Coldcard Hack

00:01:45 - Personal Impact and Initial Reactions

00:02:50 - Technical Explanation of the Vulnerability

00:03:28 - Trust and Security in Bitcoin Devices

00:04:56 - Emotional and Psychological Impact on Users

00:05:32 - Multi-Signature and Custody Solutions

00:07:43 - Community Reactions and Custody Arrangements

00:08:09 - Diversifying Bitcoin Security

00:10:30 - Self-Custody vs. Exchange Storage

00:11:43 - Single-Signature vs. Multi-Signature Explained

00:13:29 - Practical Examples of Multi-Signature Setups

00:15:43 - The Bitcoin Advisor's Multi-Signature Service

00:18:00 - Ideal Clients for Bitcoin Advisor

00:19:44 - CoinStash SMSF Crypto Exchange

00:20:15 - Host's Personal Security Adjustments

00:24:02 - Importance of Security Services

00:26:01 - Individual Responsibility in Bitcoin Security

00:27:57 - Host's Change in Security Stance

00:29:02 - Learning from Security Mistakes

00:32:28 - Value of Education and Mentorship

00:34:37 - Importance of Bitcoin Meetups

00:37:01 - Advice for Current Coldcard Users

00:39:10 - Future of Self-Custody in Bitcoin

00:40:10 - How to Reach Out to Bitcoin Advisor

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DISCLAIMER

This is not financial, investment, tax, or legal advice. I'm not a licensed advisor. Bitcoin and SMSF strategies can carry significant risks; consult a qualified tax accountant and SMSF specialist before making any decisions. I may earn affiliate commissions from links I share, but this doesn't affect your cost.