Bitcoin users moved 39,600 BTC in small transactions as the ongoing Coldcard hack pushed estimated losses to $88.6 million across 4,585 addresses.

River published takeaways from the Coldcard hardware wallet exploit that drained over 1,816 BTC from more than 7,000 addresses due to a weak random number generator.

Publicly traded bitcoin miners reduced realized hashrate by 13.4% between Q4 2025 and Q2 2026 as operators redirected power and data center capacity toward AI and high-performance computing.

Unchained published an analysis explaining how multisig wallet users were largely protected from the Coldcard entropy vulnerability that left most singlesig users immediately exposed.

Learn how to use frp on Linux to access local SSH and web apps behind NAT without port forwarding, using a public server and secure tunnels.

Core Lightning has confirmed multiple vulnerabilities discovered through AI-generated bug reports and is urging node operators to upgrade immediately or restart in offline mode.

New blockchain analysis by Bitcoin educator Bennet reveals five wallets that destroyed $8.3 million in bitcoin likely belonged to one early Mt. Gox user.

The attacker who withdrew roughly 4,000 BTC from Liquid Network's federation wallet says the coins will be returned once the underlying Elements bug is patched across all nodes.

Blockstream says it will not pay a 10% bounty to the Liquid Network hackers still holding about 598 BTC, and will pursue them with law enforcement instead.

Onchain analyst James Check argues Bitcoin already bottomed near $58,000 after two capitulation events, and that waiting for an October low is a mistake.

In a new Unchained essay, Dhruv Bansal and Stephen Hall argue bitcoin's peer-to-peer markets can decentralize money, energy, the internet and eventually AI.

In this article, tune systemd-networkd with .network and .link settings on Linux so servers boot faster, skip slow waits, and move more traffic.

Bitcoin Core is updating its security disclosure policy, saying AI has made some vulnerabilities so easy to find that long embargoes no longer protect users.