News linked to both this project and an event.
Odaily Planet Daily Report: Bitcoin hardware wallet manufacturer Coinkite disclosed in late July 2026 that a firmware build error introduced in March 2021 caused some Coldcard wallets to generate mnemonics from a smaller range, reducing the randomness of user private keys. Galaxy Research analysts stated that the Coldcard exploit occurred in multiple rounds, with observed Bitcoin losses rising from approximately $88 million to nearly $114 million within days. Researchers warned that other vulnerable addresses could still become targets, prompting many Coldcard users to move their Bitcoin. Coldcard is a Bitcoin-only wallet that supports offline signing via microSD card and optional QR codes. Launched in 2017, it has long been regarded as one of the security-focused Bitcoin hardware wallets.
Odaily News: Galaxy Research Head Alex Thorn analyzed that a new wave of Bitcoin sweeping attacks targeting Coldcard wallet addresses is underway, and cumulative losses from vulnerabilities related to Coldcard hardware wallets could approach $114 million. This attack primarily affects single-signature wallets, with no multi-signature wallets found to be impacted so far. No direct victim reports have been received yet; the assessment is mainly based on on-chain transaction pattern analysis, with some attack transactions still in an unconfirmed state.
Odaily News: According to monitoring by Galaxy's Head of Research, a suspected organized Coldcard attack is underway, with similar transactions still in the mempool awaiting confirmation. Previously confirmed transactions show RBF (Replace-By-Fee) enabled. Between blocks 960,778 and 960,792, 218 transactions occurred within approximately 2.5 hours, involving 462 victim addresses, 216 new destination addresses, and 388.92748828 BTC. None of the transactions had inputs predating the Coldcard firmware boundary. The sweep rate during this period was 13.8 times per block, compared to a baseline of 0.3 times per block in the pre-incident control window—approximately 45 times higher. The transaction topology is 1:1, with each victim address corresponding to a single new destination address. Only one destination address received two sweeps, and no consolidation addresses were observed. Some funds have already been swept to second-hop addresses.
Odaily News: Hardware wallet company Coinkite's Coldcard wallet series has experienced a seed generation randomness vulnerability, with threat actors stealing over 1,000 BTC in the past two days. Galaxy Research data shows that as of Saturday 17:36 ET, the incident involved 1,367 BTC, with losses exceeding $88 million. To notify potentially affected users, Coinkite sent security alerts to email addresses retained through its store and newsletter system since 2019. Coldcard confirmed that the emails originated from Coinkite and stated that it has contacted all reachable addresses to the best of its ability. Coinkite has faced criticism for retaining customer email data. The company stated that its public policy explains that purchase email addresses are saved so customers can log in and verify that other information has been cleared, but it did not specify a deletion timeline, saying these addresses would be kept "temporarily." Coinkite co-founder and CEO Rodolfo Novak previously stated that the company does not store customer information, deletes customer data 90 days after purchase, and offers anonymous purchase options.
Galaxy 研究主管 Alex Thorn 发文表示，围绕 Coldcard 钱包的攻击事件仍在持续发展，目前已经出现更多小型攻击者和模仿者，针对剩余 Coldcard 助记词展开攻击，他称通过协助已确认一名攻击事件中存款用户的身份，相关资金在 Duel 平台能够冻结之前已经被转出，而且涉及的资金并不属于 Galaxy Research 此前识别出的三轮主要攻击浪潮。 此前，Coldcard 疑似安全事件引发市场关注，多名研究人员发现部分由 Coldcard 生成的钱包地址出现异常资金转移。Galaxy Research 仍在持续追踪攻击地址，并提醒仍使用相关钱包种子的用户尽快采取安全措施。此次事件也进一步凸显了硬件钱包安全、私钥管理以及自托管风险防范的重要性。
Odaily News: According to monitoring by Galaxy's Head of Research, a victim's Coldcard wallet was compromised in a hacker attack involving nearly 30 BTC, of which 17 BTC were swapped for ETH via THORChain and subsequently deposited into Duel.comcasino. The victim and a researcher have sent emails to all known addresses associated with Duel.comcasino, requesting that the relevant funds be frozen, and provided all transaction and deposit information. The hacker deposited 229.72497255 ETH, valued at $445,000, into Duel.comcasino—funds originating from the Coldcard attack involving approximately 30 BTC. The victim stated that Duel.comcasino responded by saying that the police would need to contact their team. Duel.comcasino's anti-money laundering policy claims it enforces Know Your Customer (KYC) procedures and complies with all applicable laws. Duel.comcasino was notified within minutes of the deposit being completed. To date, Duel.comcasino has not frozen the relevant funds. Since most of the Western world had already passed midnight at the time of the incident, police reports cannot be filed until at least Monday. If Duel.comcasino fails to freeze the funds, the victim will pursue legal action against them. Duel.comcasino's X account has been suspended, and Galaxy's Head of Research has also flagged individuals on X suspected of being associated with the platform, including team members and dealers: @korraflow, @atrois7, @MiaMalkova.
Odaily News, Galaxy Research Head Alex Thorn posted on X platform, stating that the attack targeting wallet addresses with weak random numbers generated by Coldcard is still ongoing. Users who still hold funds in Coldcard single-signature wallets should immediately migrate to secure addresses. New victim addresses and attacker addresses are continuously being added to the investigation database, and Galaxy Research plans to release updated statistics on the number of affected addresses.He noted that the previously identified waves 1, 2, and 3 of the attack exhibit clear programmatic characteristics, and the stolen BTC currently remains in the attacker's addresses without any transfers. However, in recent times, smaller-scale attackers have begun exploiting the vulnerability to steal funds and move them through peeling chains, cross-chain services, and other methods. It is certain that single-signature wallet addresses generated by Coldcard after the March 2021 firmware upgrade are all potentially at risk, and users should migrate funds as soon as possible.Previously reported, Galaxy Research has disclosed that the Coldcard vulnerability attack has affected approximately 1,367.05 BTC (approximately $88.6 million), involving around 4,585 addresses.
Galaxy Research stated in a post on X that the attack targeting wallet addresses generated with weak randomness by Coldcard is still ongoing. The team urges users to immediately migrate funds from affected Coldcard single-signature wallets to secure addresses.They stated that approximately 600 suspected attacker addresses have been submitted to federal investigators, industry compliance bodies, and cross-industry cybersecurity investigators. These addresses are believed to hold funds stolen from Coldcard wallets with weak randomness.The team also noted that victims have proactively shared wallet addresses and transaction hashes, helping researchers establish on-chain attack patterns and further identify more affected wallets and attack addresses. Currently, multiple parties within the Bitcoin and crypto industry are assisting in user asset protection and attack tracing efforts.Galaxy Research previously stated in a post on X that a third wave of attacks suspected to target Coldcard-generated addresses has emerged, with 207.7294 BTC already transferred out. According to on-chain tracking data, the Coldcard wallet attack incident has so far involved approximately 1,367.05 BTC, valued at approximately $88.6 million, affecting 4,585 addresses.
According to monitoring by on-chain analysis firm Galaxy Research (@glxyresearch), the ColdCard wallet hacking incident has developed into a third wave, with an additional 207.73 BTC stolen. Currently, the three waves of attacks have cumulatively stolen 1,367.05 BTC (approximately $88.6 million), involving 4,585 addresses. On-chain data shows that the three waves of attacks exhibit highly similar characteristics: identical fund consolidation topology, identical P2WPKH target addresses, and mixed derivation paths. Each wave occurred approximately 27 hours apart, suggesting they were carried out by the same attacker, but there is currently no direct evidence to confirm this. Currently, all terminal addresses controlled by the hackers hold a total of 1,366.39 BTC (approximately $88.6 million), all of which are in an unspent state on-chain. Galaxy Research noted that the above data is based solely on Bitcoin block data and UTXO set analysis, and has not yet computationally verified whether the victim addresses have vulnerabilities due to low-entropy generation.
Galaxy Research stated on Friday that over 1,000 BTC from nearly 1,200 addresses have been moved, valued at approximately $70 million, with the transactions believed to be linked to a vulnerability affecting Coldcard hardware wallets.Earlier, Coldcard manufacturer Coinkite issued a warning on Thursday about an ongoing issue with seed phrases generated by Coldcard Mk3 devices. Out of caution, the company reminded all users who generated seed phrases using Mk3 devices with firmware version 4.0.1, released in March 2021, or later, that their funds may be at risk.Subsequently, Coinkite expanded the scope of its risk alert to include certain firmware versions of Mk4, Mk5, and Coldcard Q, and released emergency firmware updates for all affected models.Coinkite CEO Rodolfo Novak (also known as NVK) apologized on Friday and stated that the company takes "full responsibility" for the firmware vulnerability, acknowledging that internal review processes failed to identify the issue.Novak also suggested that the vulnerability may have been discovered with the help of artificial intelligence, noting that this incident reflects a "sobering reality under the new AI paradigm." He warned that AI-assisted code review could identify potential vulnerabilities faster than experienced security experts, while also making it easier for attackers to exploit weaknesses in public code.
According to Bitcoin.com, U.S. Senator Cynthia Lummis is pushing hard for the CLARITY Act to complete Senate voting before Congress adjourns. Section 303 of the bill grants the Treasury Department the authority to impose targeted digital asset sanctions on foreign jurisdictions, while Section 305 allows exchanges to freeze suspicious transactions for up to 180 days. On-chain data shows that North Korea's Lazarus Group stole approximately $643 million in the first half of 2026, accounting for two-thirds of the total global crypto theft during the same period ($972 million), including a $285 million attack on Drift Protocol in April and a $292 million attack on the KelpDAO cross-chain bridge. The group's cumulative theft amount has reached $6.75 billion since 2019. Currently, Galaxy Research has lowered the probability of the CLARITY Act passing within 2026 to 30%. The bill still requires 60 votes to advance, meaning at least 7 Democratic senators need to vote across party lines in support.
According to Decrypt, Galaxy Digital has officially launched the "Bitcoin Quantum Readiness Initiative," with three core pillars including: providing up to $5 million in post-quantum cryptography research grants to developers, publishing specialized research reports through Galaxy Research, and establishing a quantum advisory committee composed of scholars from multiple top universities. The initiative targets "Q-Day"—the critical moment when quantum computers utilize Shor's algorithm to crack Bitcoin's elliptic curve encryption, forge signatures, and steal wallet assets. Project Eleven predicts that quantum computers capable of cryptographic threats may emerge as early as 2030, at which point approximately 6.9 million BTC will face exposure risks. The Coinbase Quantum Advisory Committee has also called on developers to immediately initiate migration work. Meanwhile, Trump has signed an executive order setting the deadline for the U.S. federal government to complete post-quantum cryptography migration to December 2031.
Odaily报道 According to Ai Yi monitoring, a Galaxy Digital OTC-related address (0x16F...1Fde) has deposited 15,000 ETH, worth $34.74 million, to an exchange. These funds originated from 38,000 ETH withdrawn from Aave a week ago, which was the day when Kelp DAO was attacked, causing Aave to potentially face bad debt.
According to CoinDesk, cryptocurrency exchange Kraken was extorted by a criminal group that threatened to publicly release videos of its internal systems. Kraken stated that it had previously identified and addressed two incidents involving unauthorized access by internal personnel, affecting limited customer data from approximately 2,000 accounts—0.02% of its total user base—but emphasized that its systems were never breached and customer funds remained secure at all times. Nick Percoco, Kraken’s Chief Security Officer, explicitly affirmed the company would not capitulate to criminals. Kraken has notified affected users, enhanced security controls, and is cooperating with law enforcement authorities to advance the investigation; it believes existing evidence is sufficient to identify and apprehend those responsible. Separately, Galaxy Digital recently experienced a similar cybersecurity incident, though it likewise resulted in no loss of customer funds or data.