Employee arrested after Brazil’s central bank service provider hacked for US
$140 million
www.bitdefender.com/en-us/blo…
On 30 June 2025, C&M Software, a Brazilian company that provides a “bridge”
helping the country’s central bank connect to local banks, revealed that it
had been hacked.
800 Brazilian reals (approximately US $140 million) was stolen from the
reserve accounts of six financial institutions as a result of the security
breach.
In the wake of the attack, which made massive news headlines in Brazil, the
country’s Banco Central suspended access to C&M Software’s platform for all
local banks and institutions while it investigated what had gone wrong, and to
contain the damage.
Then, on Friday 4 July, the news desk of São Paulo’s TV Globo reported that
the city’s police had arrested an employee of C&M Software.
48-year-old IT worker João Roque, who worked on backend systems at C&M
Software, is alleged to have assisted hackers by selling them login
credentials for approximately US $2,700 - granting them unauthorised access to
sensitive critical systems.
According to police, Roque created the mechanism for the hackers to divert
funds. According to TV Globo Roque claims to have only communicated with the
cybercriminals via cellphone, and did not known personally. He is said to have
changed his mobile phone every 15 days in an attempt - clearly futile - to
avoid being tracked.
In a police statement, Roque reportedly claimed that he had first been
approached in March by cybercriminals as he was leaving a São Paulo bar. He
claims that later he received instructions via WhatsApp, and received payments
for his services via a motorcycle courier.
The money ultimately stolen by the hackers was from reserve accounts, used by
financial institutions to exchange funds between themselves, rather than those
belonging to customers - meaning that members of the public should not be
directly impacted by the attack.
Further investigations into the attack are ongoing. Brazilian authorities have
since frozen US $50 million linked to the incident, and C&M Software says
that it is co-operating with the investigation and that it has now brought its
platform back online.