Ledger users have been seeing alarming headlines claiming that Ledger devices have been leaking private keys for seven years. But that's not what actually happened.
In this video I explain the recently disclosed vulnerability involving the official Zilliqa app running on Ledger devices, why it only affects native ZIL transactions, and why Bitcoin, Ethereum, XRP, Solana, Cardano, and other Ledger apps are not affected.
We'll also discuss:
• How Ledger apps actually work • Why blockchain apps are isolated from one another • What a cryptographic nonce is • How a tiny programming mistake weakened signatures • Why several transactions could expose a ZIL private key • Why this does not compromise the Ledger Secure Element • Why Ledger updates are an important part of responsible self-custody
My goal is to separate the facts from the fear so you can make informed decisions instead of reacting to sensational headlines.
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If you have questions, leave them in the comments and I'll do my best to answer them.
00:00 Ledger Hacked? 00:50 What Actually Happened 01:15 How Ledger Apps Work 03:15 What Is a Nonce? 03:53 The Programming Bug 04:36 Why Multiple Signatures Matter 05:47 Why Only Native ZIL Is Affected 06:37 What This Means for Ledger Owners 07:08 Lessons Learned 07:37 Final Thoughts
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