John Crawford

​The number of ransomware attacks rose 50% in 2025 as hackers shifted their focus from large-scale attacks to small and medium-sized targets, according to blockchain analytics firm Chainalysis. In an annual report published on Wednesday, Chainalysis said there were nearly 8,000 total leak events in 2025, a 50% increase from 2024. However, total on-chain ransom

Ethereum co-founder Vitalik Buterin has proposed a plan to address four areas of the network he sees as most vulnerable to quantum attacks. Quantum computing and crypto have been in the headlines recently as concerns mount over Bitcoin and other blockchains’ resistance to quantum-capable supercomputers. Buterin posted his quantum resistance roadmap for Ethereum on Thursday

Bitcoin is on the verge of surpassing 20,000 wallets with at least 100 Bitcoin, an indicator that could signal healthy market dynamics, according to crypto analytics platform Santiment. As of Thursday, there were 19,993 unique wallets holding 100 BTC or more, worth roughly $6.71 million per wallet at the time of publication, Santiment said in

Update (Feb.27, 1:25 Am UTC): This article has been updated to include more information on Block’s job cuts and earnings results. Jack Dorsey’s payments company Block will cut roughly 40% of its staff in a major shake-up, a decision the co-founder attributed to the rapid acceleration of AI at the company.  “We're already seeing that

Key takeaways: Bitcoin derivatives show persistent fear despite the current rally toward $70,000, as seen by futures premiums being pinned well below neutral levels. The markets’ cautious stance stems from broad risk-aversion and lingering concerns over institutional BTC liquidations and Bitcoin network security. Bitcoin (BTC) retested the $70,000 level on Wednesday, recovering from Tuesday’s low

A bipartisan group of lawmakers in the US House of Representatives has introduced legislation aimed at halting prosecution of software developers who do not have custody or control of others’ crypto assets. In a Thursday notice, Representatives Scott Fitzgerald, Ben Cline and Zoe Lofgren said that they would be sponsoring the Promoting Innovation in Blockchain

Ether (ETH) price reached a weekly high of $2,150 on Thursday, which is a key level for large ETH holders, but volatility in the crypto and stock markets continues to catalyze corrections below $2,000. A daily close above $2,100 remains important because that level aligns with the cost basis and realized price of wallets holding

Nasdaq has filed a proposed rule change to list the VanEck JitoSOL ETF, a fund designed to hold the Solana-based liquid staking token JitoSOL. Liquid staking allows users to stake tokens to help secure a proof-of-stake network while receiving a transferable token in return that represents the staked assets and accrued rewards. Jito Foundation president

Bitcoin (BTC) has rebounded 7.45% over the past two days after dropping to $62,400 on Tuesday, below a key onchain price support. Despite the bounce, holders who bought six months to two years ago remain at an average cost of $74,500, a level that now stands as a potential inflection point. As BTC moves higher

Bloomberg is collaborating with Kaiko, a Paris-based digital asset market data provider, to make Bloomberg’s licensed financial data accessible directly within blockchain environments rather than through traditional offchain databases. The companies said Thursday that the initiative is designed to address the challenge of inconsistent data across tokenized markets.  In many tokenized asset ecosystems, companies may