Finastra, a leading financial software company serving top banks globally, has confirmed it is investigating a data breach after a hacker claimed to have compromised its internal file-transfer platform.

The breach was first reported by cybersecurity journalist Brian Krebs, who discovered a posting on a cybercrime forum claiming to sell stolen files allegedly belonging to Finastra's largest banking clients. The hacker claimed to have accessed 400 gigabytes of data, including client files and internal documents.

Finastra has confirmed that data was exfiltrated from its systems, but declined to disclose the number of affected customers or the types of data accessed. The company's spokesperson, Sofia Romano, stated that the investigation is ongoing, with initial evidence pointing to compromised credentials as the root cause of the breach.

The incident highlights the importance of robust cybersecurity measures, particularly for organizations handling sensitive financial data. Finastra's investigation is ongoing, and the company has pledged to keep customers informed about the breach and its impact.