To use Hashi, a Bitcoin lending protocol launched by Sui, users lock Bitcoin directly on the Bitcoin blockchain in a vault address secured by a 2-of-2 multisig requiring sign-off from Hashi validators

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The Ledger hardware wallet spy implant uses a three-chip architecture comprising one chip to read the screen, a cellular modem, and an eSIM to transmit extracted data

Mark Karpelès confirmed finding a spy implant inside a Ledger Flex purchased from Singapore airport reseller Metapod and a Nano X bought from German retailer MediaMarkt

Karpelès Lab CEO Mark Karpelès reported that spy implants were found in Ledger hardware wallets from two additional authorized resellers, Metapod and MediaMarkt, beyond Southeast Asian reseller CryptoBilis

The Ledger hardware wallet spy implant design evolved from a wired-in circuit board to clip-in blank boards designed to fall directly into place inside Ledger Nano X devices

Ledger stated that inspection of store and distributor stock in Germany revealed no signs of device tampering

Mark Karpelès recommended Ledger adopt tamper-evident packaging rather than shutting down its authorized reseller program entirely, calling it too drastic a response to the supply chain breach involving CryptoBilis-sourced devices

Mark Karpelès warned that previously costly and narrowly targeted hardware implants are likely to appear more frequently across hardware wallets in the future

MediaMarkt Saturn halted all Ledger hardware sales on October 13, 2026, in coordination with Ledger

Robbers posing as police officers in Versailles, France forced a couple at knifepoint to transfer $1 million in Bitcoin in 2026

Deutsche Bank plans to launch cryptocurrency custody services in Germany within weeks, initially offering Bitcoin and Ethereum custody to institutional clients

Coinbase published technical priorities on October 13, 2026, outlining options for Bitcoin's post-quantum migration, including staged wallet upgrades and freezing vulnerable dormant coins

A June 2026 study estimated that approximately 2.3 million Bitcoin held in lost, dormant, or early addresses cannot be moved to quantum-resistant addresses

Google Quantum AI white papers estimated in March 2026 that breaking Bitcoin's elliptic curve cryptography would require 1,200 to 1,450 logical qubits or under 500,000 physical qubits

Approximately 6.04 million to 6.26 million Bitcoin, representing over 30% of all mined Bitcoin, sit in quantum-vulnerable public key addresses

Ledger confirmed a hardware implant was discovered inside at least one Ledger device sold by reseller CryptoBilis

As of October 2026, Bitcoin had fallen nearly 35% from its October 2025 high, Ethereum over 50%, and Solana and XRP each 65%, partly attributed to quantum computing risks.

An estimated 6 million Bitcoin, representing over 30% of the total Bitcoin supply, is quantum-exposed at rest due to reliance on elliptic-curve signatures.

Because individual Bitcoin transaction outputs cannot be divided, liquidations in Babylon's Aave V4 integration target one BTCVault at a time, allowing liquidators to make repeated calls until the borrower's position health is restored

To enable Aave V4 to track collateral on Ethereum, Babylon's integration creates a transfer-restricted ERC-20 token named vaultBTC as an internal accounting record representing locked Bitcoin on a one-to-one basis

Six security firms participated in audit work covering Babylon's Aave V4 integration components, including Coinspect, Sherlock, Zellic, ABDK, ZK Security, and Runtime Verification