John Crawford

XRP Ledger Foundation has confirmed it patched a critical vulnerability found in a yet-to-be-enabled amendment of Ripple’s XRP Ledger, averting a potentially major exploit. On Feb.19, a security engineer at cybersecurity firm Cantina, Pranamya Keshkamat, and the Cantina AI security bot identified a “critical logic flaw” in the signature-validation logic of Ripple’s blockchain, XRP Ledger

Australia's crypto market is making progress in user growth and regulatory reforms, but there are still a range of issues to iron out in the sector, crypto executives told Cointelegraph. On the sidelines of the XRP Australia 2026 event in Sydney on Friday, Coinbase APAC managing director John O’Loghlen said the country has seen positive

Police seized the Bitcoin in 2021 but stored it in a third-party wallet, which was later accessed by unauthorized parties, with the loss remaining undiscovered for four years. Two people have been arrested in South Korea in relation to a case in which police lost 22 Bitcoin, now worth $1.4 million, after storing the coins

Bitcoin investors could finally be taking a break from selling, relieving some downward pressure on Bitcoin — though months of consolidation will likely lie ahead, says analyst Willy Woo. “This bearish sell-down by investors seems to have exhausted,” said Woo on X on Friday. This gives the price “a reprieve to consolidate sideways for maybe

Ether has already priced in much of the short-term macro risk and upcoming industry catalysts, setting it up for a period of sideways trading, according to a crypto analyst. “A lot of near-term uncertainty is priced into Ethereum,” Swyftx lead analyst Pav Hundal told Cointelegraph on Thursday. “It would not surprise me at all if

​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