211 stories about Security from across the crypto press, curated and summarized daily. Most recent: Sep 7, 2026.
Bitcoin saw 890,000 BTC moved in the past week, the highest activity of 2026, amid a security breach involving Coldcard wallets. Analysts at K33 suggest this could signal a potential market bottom.
A security flaw in Coldcard hardware wallets allowed hackers to steal $116 million in Bitcoin. The exploit affects older models and has prompted urgent warnings from security experts.
Bitcoin security expert Jameson Lopp warns that AI is making it easier for attackers to find wallet vulnerabilities. The recent Coldcard exploit shows even the most secure wallets can be compromised.
A possible fourth sweep of Coldcard wallets may push losses to $114 million. Users have minutes to act if they see their address in the mempool.
A security flaw in Coldcard hardware wallets has smaller Bitcoin holders moving funds back to exchanges for safety. This reverses the trend seen after the FTX collapse in 2022, where investors withdrew from exchanges. The exploit resulted in a loss of $89 million, according to blockchain analytics firms.
AMLBot launched AI Tracer, a tool that lets anyone track stolen digital assets without needing forensic expertise. The service uses AI to trace transactions, even complex ones, across blockchains.
Binance founder Changpeng Zhao (CZ) advised Bitcoin holders to diversify their storage methods after a $70 million exploit involving Coldcard wallets. The incident highlights the risks of storing large amounts of cryptocurrency in a single wallet.
The XRP Ledger is getting an upgrade next week that brings back two features previously removed due to critical bugs. The update includes five proposed amendments, focusing on security and functionality improvements.
A sophisticated attack on Bitcoin cold wallets has now affected 4,500 addresses, with total losses nearing $89 million. The attacker is exploiting weak keys generated by Coldcard wallets and has shifted tactics to target smaller balances and alter how funds are collected on-chain.
Coinkite has issued a security warning for Coldcard Mk3 users, advising them to create a strong BIP-39 passphrase and move funds to a new wallet. The warning follows reports of 594 BTC stolen from affected users.
Nearly 1,200 Bitcoin addresses were drained of over 1,000 BTC, worth approximately $70 million, due to a vulnerability in Coldcard hardware wallets. Galaxy Research reports this as one of the largest Bitcoin thefts linked to a hardware flaw.
This year's crypto hacks total $972 million, with most losses coming from stolen keys and governance failures rather than code bugs. Experts warn that audits alone don't guarantee safety, highlighting the need for stronger security practices.
Researchers have proposed a cryptographic method to safeguard Bitcoin and other blockchain wallets against future quantum attacks. This approach ensures compatibility with existing addresses, preventing the need for a hard fork.
Zcash has locked down a $1.7 billion shielded pool after a critical upgrade. The move fixes a four-year-old counterfeiting bug in the Orchard protocol and introduces new withdrawal limits.
Nine major Bitcoin firms, including BlackRock, Coinbase, and Strategy, launched the Bitcoin Security Consortium with a $15 million pledge to support Bitcoin security research and long-term resilience, including quantum readiness.
Coinbase is building a post-quantum custody system and funding Bitcoin's cryptographic upgrades to protect against future quantum computing threats. While the threat is not imminent, quantum computers could one day break Bitcoin's cryptography.
Nine of the biggest institutional names in Bitcoin formed a consortium to fund the developers working to keep the network secure—including from future quantum computers.
A consortium including BlackRock, Coinbase, and Strategy has pledged $15 million to prepare Bitcoin for potential quantum computing threats. The group will fund research and development independently, without influencing Bitcoin's governance or protocol decisions.
The Verus-Ethereum bridge was exploited for the second time in two months, with attackers stealing $7.54 million through the same vulnerability class used in May, according to Blockaid.
Multiple crypto protocols linked to Bitcoin and Ethereum lost $35 million in a series of attacks exploiting weak key management, upgrade powers, and validation checks. The breaches targeted Verus, B² Network, and other cross-chain systems, draining funds without breaking the underlying cryptography.
SecondFi is closing its doors after hackers stole $2.4 million in ADA due to a vulnerability in its transaction signing software. The breach allowed attackers to derive private keys from blockchain data, highlighting critical security risks in Web3.
A critical flaw in the Zilliqa Ledger app allows attackers to reconstruct users' private keys using onchain data. Users are urged to stop using the app until a fix is available.
The Midnight token (NIGHT) rebounded 19% after a hack on the Wanchain bridge briefly sent it to an all-time low. Charles Hoskinson is calling for a revamp of bridge infrastructure, advocating for zero-knowledge technology to prevent such exploits.
The Balance stablecoin lost 99% of its value after an attacker exploited a flaw in its lending system. The attacker manipulated bitcoin prices to drain vaults, pocketing $1 million in a single transaction.