Understanding Silent Payments - Part Two
In this second part of our silent payment series, we will take a deep technical look into what your BitBox does under the hood in order to support silent payments securely. Read more
Understanding Silent Payments - Part One
In this first part of our silent payment series, we explore how the underlying cryptography and mechanisms of silent payments actually work. Read more
Understanding Bitcoin Miniscript - Part III
Writing a Miniscript parser and analyzer in Go Read more
Understanding Bitcoin Miniscript - Part II
In the second part of the Miniscript series, we look at what Miniscript is and how it makes Bitcoin scripting easier Read more
Understanding Bitcoin Miniscript - Part I
In this first part of our Miniscript series, we explain how Bitcoin Script works and why it's difficult to use in practice Read more
Anti-klepto explained: how the BitBox02 protects you against leaking private keys
The BitBox02 is the first hardware wallet that offers protection against the nonce covert channel attack, by supporting a protocol called anti-klepto. Read more
Remote multisig theft attack on the Coldcard hardware wallet
tl;dr: When registering a multisig wallet in a Coldcard, the Coldcard did not verify that it is actually part of the multisig wallet. This allowed a malicious computer wallet Read more
Coldcard isolation bypass
Responsible disclosure of a Coldcard vulnerability that allows an attacker to spend your bitcoins when you think you are signing a testnet transaction. Read more
How nearly all personal hardware wallet multisig setups are insecure
If you use hardware wallets in a Bitcoin multisig setup, using a single computer to handle them, you are likely to be exposed to remote theft or ransom attacks. Read more