The data leaked on dpaste.de consists of email addresses, names, phone numbers, mobile phone numbers, and addresses, along with Numericable's database structure.
The hackers claim they’ve asked Numericable to pay €22,000 ($29,000), but the company has refused to give in to extortion.
“As usual, we offered this company a chance to prevent their customer data from being released over the Internet. To prevent this from happening, all Numericable had to do was to pay us 22,000 Euros,” the hackers wrote next to the leaked data.
“In life, when someone makes a mistake, especially a mistake that could potentially have grave consequences for other people, you would expect that person to man up and own up to it,” they added.
“But not Numericable. They failed to protect their servers and then failed to take the appropriate steps to prevent confidential data involving their past, future or present customers from being leaked over the Internet.”
A couple of days ago, the company’s CIO, Martial Foucart, told RTL that he received an email in which the hackers claimed to have stolen customer information.
Foucart admitted that the hackers managed to breach their site. However, the company was confident that they couldn’t have obtained customer data because it was kept separately from the rest of the website.
Numericable was determined not to pay the ransom money. Instead, they alerted authorities.
Rex Mundi claims that the company lied to the media.
“We therefore encourage the media to use the phone numbers and email addresses listed in this leak to ask if those people ever entered their private information on Numericable's website. If the answer is positive, you will then know that Numericable lied to you and to the general public,” the hackers said.
On Tuesday, the hackers claimed to have breached the systems of another Belgian company, namely the recruitment agency Habeas.