bitcoin-security

bitcoin-security An educational study of where Bitcoin key security actually comes from — and where it doesn't. Built around real BIP39/BIP32 derivation, with two experiments that sit on opposite ends of the same idea: Experiment| Search space| Feasible?| What it teaches ---|---|---|--- weakentro...

mpc-lib hardened derivation fails to protect ancestor isolation

Overview Fireblocks' mpc-lib library contains a cryptographic fail-open vulnerability in its BIP32 hardened derivation implementation in the case of a missing private parent key. This breaks the ancestor isolation property of hardened derivation, allowing an attacker with a compromised lower-leve...

PT-2026-125556

Name of the Vulnerable Software and Affected Versions mpc-lib affected versions not specified Description A cryptographic implementation flaw in the mpc-lib library used in the MPC-based custody pipeline breaks the security guarantee of BIP32 hardened derivation. The issue occurs because the...

Malicious code in bip32-js (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 115345055f99da651c7816286c6b076dbacdd2b659f466dded1a541b289e8c2d bip32-js is a typosquat of the legitimate bip32 crypto library. Its index.js is an empty stub module.exports = ; the package's only functional code i...

MAL-2026-12109 Malicious code in bip32-js (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 115345055f99da651c7816286c6b076dbacdd2b659f466dded1a541b289e8c2d bip32-js is a typosquat of the legitimate bip32 crypto library. Its index.js is an empty stub module.exports = ; the package's only functional code i...