BNP Paribas Real Estate Netherlands has been hit by a massive data breach. In the process, large amounts of confidential and privacy-sensitive personal data and trade secrets of the bank itself and hundreds of companies ended up in the hands of a self-proclaimed whistleblower. The bank launched an investigation and reported the incident to the Autoriteit Persoonsgegevens. So writes the Financieel Dagblad, which accessed the data.

The FD wrote last April about real estate investments made privately by three directors who worked at PNB Paribas' Dutch real estate arm. The newspaper now says the leak is much larger than initially thought. The leak contains data from hundreds of companies and real estate investors, including supermarket chain Ahold Delhaize and private equity firm Lone Star.
According to the Financieel Dagblad, the leak contains details of leases, brokerage fees and non-disclosure agreements with clients. Furthermore, the editors had access to private data of PNB Paribas employees and their clients. This includes bank accounts, citizen service numbers (BSN), copies of passports, confidential correspondence with lawyers, profit sharing, sick notes, salary and bonus statements and year-end reviews.
An external spokesman tells the Financieel Dagblad that PNB Paribas has no idea what documents and personal data the newspaper had access to. He does not respond to substantive questions: according to him, the bank must adhere to "strict external and internal regulations around whistleblowers. However, the hired spokesman does say that this week BNP Paribas Real Estate Netherlands informed its clients about the incident.
The bank further confirmed that the data breach was under investigation and that BNP Paribas' Dutch real estate arm reported the leak to the Autoriteit Persoonsgegevens. It is unclear whether a police report has been filed.
Privacy expert Vincent Böhre of Privacy First says this is a "serious and large-scale" data breach. "Organizations like BNP Paribas need to know in detail what information they hold and where that information is located," he told the FD. He stressed that it is "a moral and social duty" for the French bank to investigate the incident.
