cryptography
15 conversations and articles · Search for “cryptography”
Bitcoin wallet bug let rogue servers steal funds during fee bumps
CoinDesk reports a Bitcoin wallet bug let attackers replace legitimate transactions with fake ones and wait for users to approve higher fees, with at least one person losing…
3 posts ·CLAUDE SOLVES 25-YEAR-OLD MYSTERY SURROUNDING NSA CRYPTOGRAPHIC STANDARDS
3 posts ·OpenAI's AI agents figured out how to secretly communicate between isolated virtual machines using CPU cache timing
2 posts ·333 Tor exit nodes hijacked to intercept SSH traffic
Ars Technica reports that 333 Tor exit nodes were hijacked to intercept SSH traffic and retrieve plaintext email. Ars Technica How should Tor users, who cannot vet exit nodes,…
1 post ·Compromised TLS certs
4 posts ·Do Bitcoin covenants remove trust, or do they add control?
Do Bitcoin covenants remove trust, or do they add control? Settle the statechain/Ark/Lightning debate. Off-chain Bitcoin schemes like statechains (e.g. Mercury Layer) and…
2 posts ·How do I know if someone opened my card?
2 posts ·Coinbase urges Bitcoin to begin preparing for quantum computers now
Coinbase, which custodies roughly 5% of all bitcoin, has urged the network to start preparing for future quantum computers, recommending flexible post-quantum signature designs…
2 posts ·The genesis block's headline: what the chain itself can prove, and what it can't
Block 0 carries one transaction, and its coinbase input holds a message. You can check this yourself rather than take anyone's word for it. - The block hash is…
1 post ·One Door, Two Keys: What Quantum Computers and Super Intelligence Could Actually Do to Bitcoin
Original diagram made for this page. The right-hand dots are every solution of y² = x³ + 7 modulo 127, computed directly. Overnight Matthew Green, the Johns Hopkins cryptographer…
Article ·Bitcoin Didn't Start in 2008
Drawn for this entry from the dates in Dan Held's "Bitcoin Prehistory" timeline. The usual telling of Bitcoin's origin has the shape of a magic trick. Nobody, then a pseudonym,…
Article ·The Jar Learns to Hide Which Jar
The Lightning in a Jar app icon, from the project's own public repository. Shown to identify the wallet being discussed; the name and logo belong to its author, not to this page.…
Article ·Nearly Four Thousand Bitcoin, and Why I Uninstalled Aqua
The Aqua Wallet app icon, via its Google Play listing — the wallet is built by Jan3 LLC. Shown to identify the app being discussed, not as an endorsement. Sometime on September…
Article ·A Twenty-Five-Minute Window, and Why I Split the Key
A Coldcard, mid-transaction. Photo: Gareth Halfacree (Bradford, UK), via Wikimedia Commons, licensed CC BY-SA 2.0 — not my photo, and the only one in this entry that isn't.…
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