Cyberattack on Crédit Mutuel Arkéa: more than €100 million reportedly diverted

The French banking sector is facing a new cybersecurity case. Crédit Mutuel Arkéa, headquartered near Brest in Finistère, confirmed on Wednesday 4 November that it had been the victim of a cyberattack that enabled several fraudulent transactions to be carried out.

According to initial estimates reported by various media outlets, the sums diverted could reach around €118 million, or nearly $133 million. A particularly large amount, although the bank has not officially confirmed this exact figure.

Funds transferred to cryptocurrency platforms

According to the initial explanations provided by the bank, the hackers are believed to have exploited an account belonging directly to Crédit Mutuel Arkéa to carry out fraudulent transactions to other banks.

These funds may then have been converted into cryptocurrencies via specialist platforms, making them harder to trace and recover.

The bank says it quickly detected the suspicious movements and activated its security procedures. Some transactions were temporarily suspended in order to prevent further fraudulent transfers.

Could customers be affected?

This is, of course, the main concern for the bank's customers.

On this point, Crédit Mutuel Arkéa is keen to reassure: its customers' accounts and assets are reportedly not affected by the attack. The bank specifies that the fraudulent transactions were carried out from its own accounts and not from those of its customers.

Some transfers may nevertheless have been delayed as a result of the security measures put in place.

An investigation to establish the circumstances of the attack

Although the bank now describes the incident as under control, several questions remain unanswered, notably regarding the method used by the cybercriminals, their identity and the prospects of recovering the funds.

The relevant authorities have been notified and an investigation has been opened to determine the precise circumstances of the operation.

This case is yet another reminder that even major financial institutions are not immune to cyberattacks and that IT security has now become a major challenge for the banking sector.

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