The world's largest cryptocurrency exchange, Binance, was the victim of the sector's largest hacker attack, resulting in the theft of $6.3 billion (approximately R$ 34 billion) on Thursday, the 29th.
Micaella Ribeiro, co-founder of IAM Brasil and an expert in Information Security and Identity and Access Management, commented that this incident demonstrates a significant shift in the landscape of digital threats during an interview with Olhar Digital.
The platform, used for trading and custody of cryptocurrencies such as Bitcoin, suffered the attack around 5 PM Brasília time, and the process lasted about twenty minutes, according to analysis of transaction records by specialists.
Companies specializing in cryptocurrency tracking, such as TRM Labs and Chainalysis, pointed out that those responsible for the theft were hackers associated with North Korea. Although Binance had not yet identified the criminals at the time of publication, the company began recovering the affected assets for users.
Binance publicly declared that it would cover the losses using its own funds, reserving more than $6.34 billion to cover the incident. Of these amounts, $5 billion is already in impacted token assets, and the purchase of the remainder is being made through market and OTC channels, although this process may take longer due to the liquidity of some tokens.
Currently, $3 billion has been blocked with the help of industry partners, and the exchange continues to work with law enforcement agencies, including the FBI and the U.S. Secret Service, to recover these funds.
The company temporarily suspended withdrawals, assuring that customer money is safe and promising to cover any losses. So far, about $3 billion in stolen cryptocurrencies have been located, part of which has been blocked by other companies in the segment.
Initially, Binance suspected that the attack occurred through the intrusion into one of its engineers' computers. Later, the company disclosed that it had identified security vulnerabilities that could have been exploited by cybercriminals. According to TRM Labs, the hackers managed to compromise the system responsible for authorizing cryptocurrency transfers.
Part of the amount stolen was in stablecoins, which function as a reflection of real fiat currencies, such as the US dollar. Several entities blocked resources: Tether froze a little over $1.5 billion; Circle blocked more than $800 million; and Ripple retained about $200 million.
Additionally, Reuters reported that World Liberty Financial, a cryptocurrency company linked to U.S. President Donald Trump and his family, also collaborated in blocking these resources, which prevents the movement of the stolen cryptocurrencies.
Founded in 2017 in Shanghai, China, Binance has 335 million registered global users, according to its 2025 annual report. This report indicated that the company managed approximately $162.8 billion in digital assets.
Micaella Ribeiro emphasizes that an attack on an exchange does not necessarily imply that blockchain technology has been compromised, but stresses the inherent risks of using cryptocurrencies. She differentiates between the security of blockchain technology and the security of the platforms used to buy, sell, and store these assets.
According to the expert, this attack underscores an alarming trend: criminals are focusing on compromising identities, devices, and systems that already hold valid permissions to perform crucial operations. This increases concern about non-human identities, such as APIs, applications, and service accounts, which often have high privileges without the same level of governance given to conventional users.
For Ribeiro, the primary lesson is that a technically authorized operation is not always a legitimate operation. Therefore, she advocates that organizations need to change their security strategy, going beyond protecting initial access, requiring continuous verification of who accesses, what privileges they have, and whether the actions are consistent with their responsibilities.
Regarding investors, the expert advises that the most important thing is to follow the official communications of the exchange, monitor any movement restrictions, and increase vigilance against fraud that may arise from the repercussions of the incident.