Hacker attack exposes personal data of millions of Caixa Vida e Previdência clients
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Olhar Digital
olhardigital.com.br

Hacker attack exposes personal data of millions of Caixa Vida e Previdência clients

A cyberattack hit Caixa Vida e Previdência, resulting in the exposure of personal data of current and former institution clients, including names and CPF numbers. Although the incident was detected on Friday, the 6th, it was only made public this Thursday, the 12th.

The company, which is a subsidiary of Caixa Seguridade, confirmed that there was unauthorized access to its systems and that copies of registration and personal information were taken outside its technological environment. The affected database contains records of 7.6 million active clients, although the official communication does not specify how many individuals actually had their information exposed.

In addition to names and CPFs, the compromised data may include addresses, phone numbers, emails, and dates of birth for a portion of the records. Caixa Seguridade assures that, so far, there are no signs that financial or authentication information has been breached, which includes policy values, pension balances, bank details, and passwords.

After identifying the undue access, the company took immediate measures, blocking the mechanisms used in the attack and implementing new layers of protection. A technical investigation was initiated with the help of specialized forensic auditing consultancy to determine the exact circumstances of the occurrence.

The National Data Protection Agency (ANPD) is currently monitoring the actions adopted by the institution, with a special focus on transparency and mitigating any potential harm to data subjects. The agency stated that it can request additional clarification from Caixa if it deems necessary.

Clients whose phones or emails were exposed, as well as groups classified as vulnerable, are being notified and receiving guidance to prevent fraud. Caixa has also provided an email channel to answer the questions of those affected.

On the same day the security incident was disclosed, users began reporting problems with Caixa's Pix service. According to Downdetector, which monitors complaints about digital services, failure reports emerged around 10 am this Thursday (12) and increased during the morning, exceeding a thousand notifications by 1 pm.

Reports included difficulties accessing the application, making transfers, and sending or receiving payments. Downdetector indicated that 55% of complaints referred to problems with the mobile application, 28% were related to transfers, and 14% to internet banking, which is access via browser.

As of now, there is no information establishing a direct link between the Pix instability and the cyberattack suffered by Caixa Vida e Previdência. The original article on this topic was initially published in Olhar Digital.

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Clients of Caixa Vida and Previdência began receiving email notifications this Thursday, November 12, regarding an intrusion into the financial institution's systems. It is estimated that the registration data of at least 7.6 million individuals was compromised.

According to the sent communication, unauthorized access to Caixa's systems was detected on November 6, 2026. This invasion resulted in the collection of personal information, including name, CPF, date of birth, nationality, email address, and phone number.

Caixa itself assures that, as of now, there is no indication that this leaked data has been made public or used inappropriately. Despite this, the alert is considered relevant, given that such information can be used as a basis for fraud, such as fake phone calls simulating bank employees.

In a report about the incident, sent to the Securities and Exchange Commission (CVM), Caixa informed that the hacker action affected 7.6 million clients of Caixa Vida and Previdência, a division managed by Caixa Seguridade. This number includes both current and former clients.

Caixa Vida e Previdência offers various services, such as life insurance, private pension plans, travel insurance, and personal accident protection. Therefore, anyone who possesses or has had access to these products must be attentive to the risk of fraudulent contacts.

It is important to note that the intrusion did not compromise the data of clients of Caixa Econômica Federal as a bank, nor the data of other subsidiaries, such as Caixa Cartões or Caixa Loterias.

In compliance with current legislation, Caixa has already notified the National Data Protection Agency (ANPD) of the incident and stated that it has implemented measures to reduce undue access to its systems.

Binance covered 95% of the damage after a $6.3 billion cyberattack
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Binance covered 95% of the damage after a $6.3 billion cyberattack

The cryptocurrency exchange Binance has begun the phased restoration of its withdrawal service following a major cyberattack. The company reported that it managed to cover almost 95% of the incurred losses with its own funds.

According to information published on the company's official website, withdrawals were first resumed on the Bitcoin network. Subsequent recovery phases are planned to cover operations with assets such as Ethereum, BNB, Solana, USDT, and other cryptocurrencies.

According to the company itself, the damage caused by the cyberattack amounted to $6.3 billion, of which nearly 95% was compensated from the exchange's own funds. The remaining 5% relates to low-liquidity cryptocurrency assets.

It should be recalled that on October 29, hackers infiltrated Binance's internet-connected crypto wallets and stole approximately $6.3 billion in assets. Following this, the exchange temporarily suspended withdrawal operations.

With the assistance of law enforcement agencies and partners, about $3 billion in stolen assets was frozen in blockchain networks.

On October 31, the U.S. Federal Bureau of Investigation (FBI) announced that the hacker group TraderTraitor, linked to North Korea, was behind this cyberattack. According to the FBI, the criminals converted part of the stolen funds into Ethereum cryptocurrency. Law enforcement agencies continue to monitor the further actions of these individuals.

The investigation into the mechanism of the cyberattack is ongoing. Initial information pointed to a possible hacking of one of the company's engineers' laptops, but other vulnerabilities were subsequently identified.

Binance emphasizes that it assumes all financial losses, and clients will not suffer any losses. The exchange plans to publish a full technical report after the verification is complete.

Hackers stole $6.3 billion from Binance in the largest attack in history
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Hackers stole $6.3 billion from Binance in the largest attack in history

Hackers stole $6.3 billion (equivalent to approximately 33.71 billion Brazilian reais) from Binance, the world's largest cryptocurrency exchange. Analysts consider this incident the largest in the sector's history.

This incident caused a market drop, prompted industry companies to freeze some funds, and raised questions about the security of digital asset trading platforms.

According to the American blockchain analytics company TRM Labs, the attackers gained access to Binance wallets across 10 different networks and transferred the majority of the funds in about 20 minutes. The company linked this attack to North Korean groups, noting technical similarities with previous thefts attributed to Pyongyang, including the 2025 hack of the Bybit exchange, which was investigated by the FBI.

Chainalysis reported that it could not yet confirm the cause of the intrusion. By 9:30 AM Brazilian time, the company had identified at least $5.912 billion (approximately 31.63 billion Brazilian reais) in stolen assets.

Mark Karpeles, former head of the Mt. Gox exchange, told Reuters that Binance's assets appear to be distributed across different systems. He speculated that the hacker might have obtained valid authorization to move funds in certain platform systems and possibly even access to a private key.

Binance cooperated with partners to block the affected resources and managed to localize about $3 billion (16.05 billion Brazilian reais). Co-founder Yi He confirmed that the company would cover all losses resulting from the attack.

Other companies also participated in efforts to prevent the movement of funds. Binance's initial investigation showed that the breach might have started with the compromise of one engineer's computer. This access allowed the attacker to penetrate one of the exchange's systems and execute unauthorized withdrawals.

The company stated that user deposits were unaffected and expected to resume withdrawals within 48 hours after the attack. Binance also holds a customer protection fund composed entirely of Bitcoin.

For Kenneth Goh, Director of Private Capital Management at UOB Kay Hian, the attack on one of the world's largest exchanges should prompt investors to pay more attention to asset custody and platform responsibility in case of security failures.

The market reacted to the incident with decreased trading. Bitcoin fell by more than 3%, reaching a six-week low of $76,368. Ethereum also lost over 3%, dropping to $2,178. Coinbase shares fell by 4.8%, and Strategy shares dropped nearly 6% in extended trading in the United States.

Amanda He, Investment Director at ChainUp Investment, told Reuters that the initial drop might have been caused by the cryptocurrency being sold by the attacker himself. In her opinion, this step contributed to spreading investor concerns during the Asian session. She mentioned that her company sold positions held on Binance and converted the proceeds into stablecoins.

For Tim Sun, Senior Researcher at HashKey Group, the pause in deposits and withdrawals on Binance could negatively affect capital flow between platforms and impact market makers responsible for providing buy and sell prices to facilitate trades.

Liquidity concerns are also featured in assessments by Damon Xu, founder of 1Token. Commenting to Reuters, he predicted a reduction in strategies involving simultaneous operations across different exchanges and the use of leverage, which allows trading with borrowed funds. Xu believes that decentralized platforms may benefit from potential capital and commercial activity shifts.

Jeff Ko, Lead Analyst at ViaBTC, assessed to Reuters that Bitcoin might face less selling pressure because its transactions are tracked on the blockchain, making it difficult to move stolen funds without leaving traces. Ethereum, conversely, might experience greater pressure due to the availability of tools that facilitate obscuring transaction origins.

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