Bitcoin Security & Custody
31 stories
Revolut Data Breach Exposes Wealthy User Passports and Bitcoin Activity
Revolut mistakenly released sensitive identity documents and Bitcoin transaction histories for high-net-worth clients after processing a fake government data request that bypassed standard email authentication controls.
Bitcoin Theft Mastermind Pleads Guilty After $245 Million Crypto Heist
A 22-year-old Singaporean admitted to orchestrating a $245 million crypto theft ring that drained over 4,100 Bitcoin from a single victim and laundered funds into jets, supercars, and high-end real estate across the U.S.
Bitcoin Holders Face New Risks When Borrowing Without Selling
Bitcoin owners can now access loans without selling their BTC by using custodial tokens on other blockchains. But this approach exposes users to new risks, including reliance on custodians, redemption restrictions, and potential liquidation if prices fall
Bitcoin Core Lightning Docker flaw exposes nodes to silent security risk
A packaging error in Core Lightning's Docker images left node operators running unpatched binaries that falsely reported as updated, forcing users to check image digests to ensure security fixes are in place before the embargoed source code is released
Bitcoin Hardware Wallet Bridge HWI to End Support for New Devices
Bitcoin's Hardware Wallet Interface (HWI), a key tool for connecting wallet software to hardware devices, will stop adding support for new models, raising compatibility concerns as its Rust-based successor remains unfinished
Bitcoin Tests Quantum-Safe Transaction, But Millions Remain at Risk
A new Bitcoin mainnet transaction demonstrates a quantum-resistant method for moving funds, but roughly 7 million BTC remain exposed to future quantum attacks due to public key visibility and protocol limitations
HashKey Cloud Joins Stacks Genesis Bond, Testing Bitcoin Yield Demand
HashKey Cloud is participating in Stacks' Genesis Bond pilot, locking Bitcoin while keeping custody of its keys. The move highlights institutional interest in native Bitcoin yield, but exposes participants to STX price risk and protocol mechanics
Core Lightning Locks Down After AI-Discovered Bugs Trigger Emergency
Core Lightning developers have imposed a two-week embargo on technical details after multiple AI-generated vulnerability reports, urging node operators to upgrade or take nodes offline to reduce risk during the patch rollout
Bitcoin Security Faces New Risks From Block Fee Gaps
A new study finds that sharp differences in transaction fees between consecutive Bitcoin blocks can trigger more block races and alter miner incentives, raising fresh questions about the network's long-term security as subsidies decline
Bitcoin Instant Validation Faces 17 GPU-Year Barrier, Hazync Shows
Hazync's prototype can verify early Bitcoin blocks in milliseconds, but a full-chain proof would demand about 17 GPU-years-highlighting the scale of compute required for reusable, trustless Bitcoin validation
Citi to Launch Institutional Bitcoin Custody With Custody+ in 2026
Citigroup will introduce Bitcoin custody for institutional clients by late 2026, integrating crypto and traditional assets under its new Custody+ platform and expanding access to digital asset infrastructure.
Bits of Gold Data Breach Halts Bitcoin Purchases on Yellow App
A data breach at Bits of Gold, Israel's largest regulated crypto broker, has led to a temporary suspension of Bitcoin purchases on Paz's Yellow app, with personal data of up to 250,000 users potentially exposed but customer funds reportedly unaffected
BitGo's $4.3B Revenue Reveals Razor-Thin Margins and Ongoing Losses
BitGo posted $4.3 billion in quarterly revenue, but nearly all of it was offset by direct transaction costs, leaving the company with negative earnings and highlighting the challenge of turning high-volume digital asset sales into sustainable profits
UK Ranks Third in Bitcoin Adoption but Cannot Hold Seized BTC
The UK's high Bitcoin adoption score is driven by policy and enforcement, but court rules prevent the government from treating over 60,000 seized BTC as national reserves
Coinbase and Blockstream Push for Wider AI Access in Crypto Security
Major crypto firms are urging AI labs to grant vetted security researchers greater access to advanced models, warning that current restrictions may leave digital asset infrastructure exposed to evolving cyber threats
Bitcoin ETF Inflows Surge as Sentiment Diverges From Stocks
U.S. spot Bitcoin ETFs saw their strongest inflows since April, with BlackRock and Fidelity leading the charge, as investors respond to shifting sentiment and security concerns following a major hardware wallet exploit
Coldcard Wallet Exploit Triggers $130M Bitcoin Theft, ETF Inflows Surge
A vulnerability in Coinkite's Coldcard hardware wallet has led to $130 million in stolen Bitcoin, raising new questions about self-custody security as spot Bitcoin ETFs attract $382 million in inflows over two days
Bitcoin Faces Block Rejection as BIP-110 Enforcement Nears
Bitcoin nodes enforcing BIP-110 will soon begin rejecting non-signaling blocks, raising the risk of chain splits and operational uncertainty for miners, exchanges, and node operators as the signaling window closes with low support
AI Security Sprint Flags 6,700 Bitcoin Project Issues in 55 Hours
A rapid AI-driven review uncovered thousands of potential vulnerabilities across hundreds of Bitcoin-related projects, but the true scale of confirmed risks and fixes remains unclear as validation data is still missing
Physical Crypto Thefts Top $30M in 2026 as France Faces Surge
Over $30 million in cryptocurrency was forcibly stolen in the first half of 2026, with France experiencing a sharp rise in violent attacks linked to leaked tax data and targeted family incidents
AI Threatens Bitcoin Custody Security Before Quantum Computing Arrives
AI is accelerating the discovery of vulnerabilities in Bitcoin custody systems, raising new risks for cold storage and hardware wallets even as Bitcoin's core cryptography remains unbroken
Bithumb Targets 2028 IPO After Compliance Overhaul
Bithumb locked in a 2028 IPO goal and 2027 preliminary review as it moves to K-IFRS, tightens internal controls, and rebuilds trust after a costly operational error drew regulator scrutiny
Trump Media Moves 2,628 Bitcoin to Crypto.com, Denies Sale
Trump Media sent 2,628 BTC worth about $165 million to Crypto.com on August 2 in two transfers. The firm says the coins were not sold, while analytics firms flagged a probable sale and residual balances match disclosed loan collateral
Coldcard Firmware Bug Drains $89M From Bitcoin Wallets
A March 2021 Coldcard firmware flaw let attackers steal about 1,367 BTC worth roughly $89 million from thousands of addresses. Researchers say vulnerable wallets remain at risk and urge immediate fund moves
Bitcoin Faces Governance Test as Bugs, Covenants, and Quantum Risks Collide
Bitcoin's next protocol upgrades confront unresolved bugs, new custody tools, and looming quantum threats, all while miner support fractures and governance faces its toughest coordination challenge in years
Flashcoin Scams Still Target Crypto Traders in 2026
Fake balances that vanish after a brief appearance keep tricking peer-to-peer buyers. Learn how confirmations, explorers, and pressure tactics separate real transfers from flashcoin fraud
Seed Phrase Backups Create Major Self-Custody Security Gaps
Lost or exposed recovery phrases still wipe out self-custody holdings more often than chain exploits. Here is how paper, single-site, and digital backups fail-and what UKey Seed Ring claims to change
Bitcoin vs Gold: Which Holds Up Better for 2026 Investors
Bitcoin offers higher growth potential with sharp drawdowns, while gold delivers steadier capital preservation. Spot ETFs, supply rules, and inflation-hedge data shape how U.S. investors may weigh both assets in 2026
UKey Seed Ring Offers Wearable Backup for Crypto Seed Phrases
UKey's Seed Ring stores wallet recovery indexes in a battery-free NFC ceramic ring, separating seed backup from transaction signing for self-custody users who want less fragile paper notes
Coldcard Hardware Wallet Flaw Exposes Bitcoin to Remote Key Theft
A vulnerability in Coldcard hardware wallets could let attackers remotely reconstruct private keys from seeds generated on certain firmware, putting user funds at risk and requiring urgent action.
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