Hackers steal 140 million Dollar from a Brazilian bank through insider access.

In July 2025, hackers breached the reserves of the Brazilian central bank, stealing 140 million Dollars through insider access to C&M Software.

The breach highlights the vulnerabilities in traditional financial systems and underscores the risks of internal threats affecting fintech and banking systems.

Hackers managed to access the reserves of the central bank through stolen credentials of an employee at C&M Software. The stolen fiat currencies were quickly converted into Bitcoin (BTC) and Ethereum (ETH) through over-the-counter brokers and local exchanges. Brazilian authorities and blockchain investigator ZachXBT are tracking the flow of funds.
ZachXBT, a Blockchain investigator, "I will publish the theft addresses related to the incident I discovered when it is acceptable to share them as I was assisting in freezing the funds and unlabelled OTC." Source
This breach raises concerns in the financial services sector and affects market confidence. Commercial banks holding these reserves have been scrutinized, and the central bank has ordered the separation of their programs. The Brazilian federal police are focusing their efforts on preventing money laundering through cryptocurrency channels.
This incident highlights the ongoing evolution of the threat landscape in banking networks. Financial institutions are under pressure to enhance security protection against internal breaches. The focus remains on improving oversight in fintech partnerships. Developing defensive protocols within these sectors becomes crucial amid the technological interconnectivity with cryptocurrency systems.