Cointelegraph Bitcoin & Ethereum Blockchain News

BlackRock Bitcoin warning In a rare move, BlackRock has quietly added a new line to its iShares Bitcoin Trust (IBIT) filing — and it is turning heads. The update, submitted in early May 2025, flags quantum computing as a potential risk to Bitcoin’s long-term security. The filing specifically warns that if quantum tech advances far…

10 Red Flags of a Fake Crypto Airdrop (And How to Avoid Them)

Key takeaways In 2024 and 2025, fake airdrop scams targeting Hamster Kombat, Wall Street Pepe and others led to millions in user losses, contributing to over $9.9 billion in global crypto scam damages. Fake airdrops impersonate legitimate projects, tricking users into revealing private keys, signing malicious contracts or paying upfront fees that lead to irreversible…

Vitalik notes how ETH could fill the gap as Sweden rethinks cashless plans

As Sweden reconsiders its push toward a cashless society, Ethereum co-founder Vitalik Buterin highlighted the fragility of centralized digital payments and the opportunity presented by decentralized payment alternatives.  In recent years, Sweden has led the charge toward a cashless future, with digital payment platforms becoming widespread. However, as concerns over cyber-threats, civil defense and instability…

Banking groups ask SEC to drop cybersecurity incident disclosure rule

American banking and financial industry advocacy groups have petitioned the Securities and Exchange Commission to repeal its cybersecurity incident public disclosure requirements.  Five US banking groups led by the American Bankers Association asked the regulator to remove its rule in a May 22 letter, arguing that disclosing cybersecurity incidents “directly conflicts with confidential reporting requirements…

Bitcoin holds key support as HYPE, XMR, AAVE, WLD lead altcoin rally

Key points: Bitcoin price is stuck below $109,588, but the pullback has not altered its bullish chart structure. A bullish weekly open from Bitcoin could extend gains in HYPE, XMR, AAVE, and WLD. Bitcoin (BTC) remains stuck below the $109,588 level during a quiet weekend, but analysts remain bullish. Material Indicators co-founder Keith Alan said…

Token Drops Below $2.30 as Bulls Struggle to Regain Control

Global economic tensions are weighing heavily on cryptocurrency markets as XRP experiences a significant correction amid heavy selling pressure. The recent announcement of potential 50% tariffs on European Union imports by the US government has triggered widespread market uncertainty, with XRP falling alongside most major cryptocurrencies despite Bitcoin recently reaching new all-time highs. Technical analysts…

Coinbase faces another data breach lawsuit claiming stock drop damages

Coinbase and two executives have been hit with another proposed class-action lawsuit over the crypto exchange’s stock price drop after disclosing a user data breach earlier this month and for allegedly failing to disclose a violation of an agreement with a UK regulator. Coinbase investor Brady Nessler said in a May 22 lawsuit filed in…

Coinbase faces another data breach lawsuit claiming stock drop damages

Coinbase and two executives have been hit with another proposed class-action lawsuit over the crypto exchange’s stock price drop after disclosing a user data breach earlier this month and for allegedly failing to disclose a violation of an agreement with a UK regulator. Coinbase investor Brady Nessler said in a May 22 lawsuit filed in…

Blockchain security firm releases Cetus hack post-mortem report

Blockchain security firm Dedaub released a post-mortem report on the Cetus decentralized exchange hack, identifying the root cause of the attack as an exploit of the liquidity parameters used by the Cetus automated market maker (AMM), which went undetected by a code “overflow” check. According to the report, the hackers exploited a flaw in the…

Ethereum price chart targets $4K as transaction fees hit 3-month high

Key takeaways: Ethereum is forming a bull flag on the daily chart, with a potential breakout to $4,000. If Ethereum’s network activity and total value locked continue to grow, ETH price may see further gains. Ether’s price printed a “bull flag” on the daily chart, a technical chart formation associated with strong upward momentum. Could…