zil

Zilliqa stated that there is a serious random number generation vulnerability in the Zilliqa Ledger application, affecting the Schnorr signatures of native non-EVM Zilliqa transactions. Attackers can recover the signer's private key from the biased temporary random numbers using only publicly available on-chain data.Any account that has signed and broadcasted about 5 or more native transactions through the Zilliqa Ledger application should be considered compromised. Since the related signatures are permanently recorded on the chain, subsequent updates to the application cannot eliminate the risk, and the affected private keys must be deactivated. EVM transactions and development tools such as zilliqa-js, gozilliqa-sdk, and pyzil are not affected.The vulnerability arises from the application selecting the wrong 32 bytes when copying the random number, retaining 8 bytes of zero padding and losing 8 bytes of entropy, resulting in each random number having a maximum of 64 bits fixed to zero. Attackers can use 5 or more affected signatures to recover the private key within seconds using ordinary hardware. Zilliqa observed suspected active exploitation on July 19 and confirmed the root cause on July 21.Zilliqa has suspended native transactions to prevent further loss of funds and is preparing a revised application with Ledger. However, the revised version cannot protect the exposed keys, and affected users should not transfer assets on their own but wait for the official announcement of a coordinated disposal plan.

According to an official announcement from Zilliqa, the project team has learned that a security incident occurred with one of its exchange partners, resulting in the theft of some ZIL from cold wallets. The incident is currently under joint investigation by various parties, and the specific scale and cause of the theft have not yet been disclosed.As a precautionary measure, Zilliqa has notified all exchanges to temporarily suspend ZIL deposits and withdrawals to prevent the stolen funds from being transferred or sold through centralized platforms. The team stated that further updates will be released once they have accurate information and reminded users to only pay attention to official channels.

According to the official website of the Brazilian Securities Commission (CVM), the CVM officially established the Security Tokenization Working Group (GTT) on July 17, 2026, aiming to conduct research, testing, and regulatory framework development around Distributed Ledger Technology (DLT), covering aspects such as the registration, custody, trading, and clearing of securities.The initial operating period of the working group is 120 days, which can be extended by 30 days, gathering representatives from 14 departments within the CVM, and will invite government agencies, self-regulatory organizations, and market experts to participate. The first task is to submit an experimental regulatory framework proposal for security tokenization to the CVM committee within 60 days of its establishment. CVM Chairman Otto Lobo stated that tokenization is one of the most important structural changes in the capital market and requires equally innovative regulatory responses.

Bitcoin Treasuries.NET posted on platform X that the Brazilian listed company OranjeBTC (OBTC3) has additionally purchased 8 BTC, currently holding a total of 3912 BTC, ranking 24th in Bitcoin 100.

According to IBTIMES, Brazilian police announced the launch of "Operation Veil of Maya," executing 9 search and seizure warrants simultaneously in São Paulo, Ribeirão Preto, Porto Alegre, and Canoas to combat a money laundering network involving 87 shell companies. The operation's name is derived from the philosophical concept of "Maya," which refers to the illusion that hides reality.Investigations show that cryptocurrency primarily plays a role in cross-border fund transfers within this money laundering network, where criminals receive illegal income through shell companies, convert the funds into crypto assets, and then transfer them abroad. Those involved may face charges of money laundering, tax evasion, participation in organized crime, and other related accusations, but the police have not yet disclosed the scale of the funds involved or the quantity of seized assets.

According to CoinDesk, Coinbase mistakenly sent a "breaking news" alert to users, stating that the Norwegian football team defeated Brazil 3-2 in the World Cup knockout stage, while the match had not yet started. The alert also mentioned that Haaland scored twice in the match; however, Coinbase's own market prediction page still indicated that the match was delayed due to weather.Reports indicate that a user posted a screenshot of the notification on X on Sunday. Coinbase CEO Brian Armstrong subsequently replied that he was investigating the matter with the team. According to another post, the alert was sent at 10:26 AM Eastern Time, while the match did not start until 4 PM.Max Branzburg, Coinbase's head of consumer and business products, later stated that the erroneous report had been corrected, and the company had made updates to prevent similar inaccurate information in the future. He also mentioned that AI-driven 24/7 trading insights have potential but still require adjustments for such issues. In the actual match, Norway ultimately defeated Brazil 2-1, with Haaland scoring two goals.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the Polymarket market. A large whale invested $333,040.52 in a single bet on "O/U 2.5" during the "Brazil vs. Norway - More Markets" event. Based on the current transaction price, the latest corresponding win rate for this bet is 42%.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the Polymarket market. A large whale invested $50,400 in the "Brazil vs. Norway - More Markets" event, betting on "Both Teams to Score." Based on the current transaction price, the latest corresponding winning probability for this bet is 60%.

According to Bitcoin.com, the Central Bank of Brazil stated at a congressional hearing that stablecoins have the attributes of payment tools and should be classified as electronic money instruments rather than general digital assets, thus falling under a stricter regulatory framework.The Brazilian Association of Crypto Economy opposed this, arguing that such classification could lead to regulatory conflicts, hinder the application of stablecoins in institutional and retail markets, and divert Brazil from international regulatory trends. Meanwhile, the Central Bank of Brazil has recently increased regulatory requirements for virtual asset service providers, which may put pressure on the operations of small and medium-sized crypto institutions.

According to Bloomberg, the Federal Police of Brazil simultaneously carried out law enforcement actions in multiple locations in São Paulo to implement the sanctions resolution previously issued by the U.S. Department of the Treasury, targeting cross-border money laundering gangs serving the Brazilian gang "First Command of the Capital (PCC)."This operation executed 11 temporary arrest warrants and conducted 13 searches and seizures, involving two core individuals who have been placed on the sanctions list by the U.S. authorities. As ruled by the court, a total of 1.04 billion reais (equivalent to 200 million dollars) in funds, physical assets, and cryptocurrencies associated with the individuals involved have been frozen.The individual involved, Stella Stefanie Nunes Henrique de Oliveira, has been arrested by the police, while another suspect, Victor Henrique de Oliveira Shimada, is currently at large. U.S. authorities accuse the two of establishing multi-layered financial channels, relying on cryptocurrency transfers, cash transportation, and large transfers between public and private accounts to move criminal proceeds. The suspects will face multiple charges including conspiracy, money laundering, and illegal cross-border transfer of funds.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the Polymarket market. A large whale invested $62,604.81 in the "Brazil vs Japan - More Markets" event, specifically on "O/U 2.5". Based on the current transaction price, the latest corresponding winning probability for this bet is 57%.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the Polymarket market. A large whale invested $59,400 in a single bet on the "Scotland vs. Brazil - More Markets" event for "O/U 2.5". Based on the current transaction price, the latest corresponding win rate for this bet is 54%.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the Polymarket. A large whale invested $168,164.83 in the "Brazil vs. Haiti - More Markets" event, specifically on "O/U 3.5". Based on the current transaction price, the latest corresponding winning probability for this target is 50%.

According to Livecoins, Brazilian Federal Deputy Lincoln Portela proposed Bill No. 2.901/2026, which aims to establish a framework for a national fintech and digital finance platform, creating a permanent regulatory sandbox system for testing blockchain technology and asset tokenization, supervised by the Central Bank of Brazil.The bill requires regulatory requirements to be proportional to the size of the company, allowing small fintech startups to apply simplified standards, and prohibits the government from imposing bureaucratic measures or obligations that do not align with the digital nature of the cryptocurrency market. The sandbox testing scope includes financial flow tracking, artificial intelligence credit applications, and programmable payment practices.The bill also allows companies to share network infrastructure and institutional adaptation databases, but they must comply with data protection regulations. The cooperation mechanism aims to combat financial crimes in cryptocurrency transactions, promote customer identity verification, and enhance cybersecurity.The bill also proposes the establishment of a national system for digital financial integrity, coordinating network regulatory actions to combat criminal structures that use cryptocurrency to hide wealth. Fines for non-compliant companies can reach up to 20% of their annual profit or revenue. The bill will be discussed in various committees of the House of Representatives.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the market Polymarket. A large whale invested $91,700 in the "World Cup Champion" event, specifically targeting "Brazil." Based on the current transaction price, the latest corresponding winning probability for this target is 91.7%.

According to on-chain data monitored by Catcher Predict, significant capital movements are predicted in the market Polymarket. A large whale invested $128,366.1 in the "Brazil vs Morocco" event, specifically betting on "Draw (Brazil vs Morocco)." Based on the current transaction price, the latest corresponding winning probability for this bet is 26%.

According to monitoring by Catcher Predict, in the predicted market event "Brazil vs Morocco - More Markets" on Polymarket, the "Over" option in the sub-market "Morocco Second Half O/U 1.5" has experienced a dramatic fluctuation in winning probability, soaring from 8.5% an hour ago to the current 25.5% (a fluctuation of 17%). Please note the impact of related breaking news.

According to monitoring by Catcher Predict, in the "Brazil vs Morocco More Markets" event on the prediction market Polymarket, the "Over" option for the sub-market "Morocco Second Half O/U 1.5" experienced significant fluctuations in winning probability, soaring from 9% an hour ago to the current 27% (a fluctuation of 18%). Please note the impact of related breaking news.

According to Livecoins, the Brazilian House of Representatives' Finance and Taxation Committee (CFT) has approved a bill to penalize cyber fraud, authorizing the freezing of cryptocurrency balances of individuals under police investigation, and also proposing amendments to relevant provisions of the Penal Code to increase penalties for cybercriminals.Crimes committed through social media or phone will face harsher penalties, with those convicted of cyber attacks facing imprisonment of 6 to 10 years, up from the previous 4 to 8 years. Additionally, judges will have the authority to freeze suspects' assets in Bitcoin exchanges and bank accounts. Some preventive measures include freezing physical assets and prohibiting the use of payment systems. The bill will next be submitted to the Constitution and Justice Committee (CCJ) for review, which is expected to be completed in the coming days.