An unknown group of hackers has breached a server managed by Proserve, a Dutch hosting services provider.
The databases of websites such as Q-Music, The Telegraaf, Stedin, and various online stores were accessed and the details of around 800,000 users were stolen as a result of the hack, Null reports.
According to experts from the Society of Hacker Housewives (translated from Genootschap van Hackende Huisvrouwen), the hackers leveraged a vulnerability in the server to gain access to all that data.
The researchers also identified another vulnerable Proserve server, and the worrying fact is that this second machine shouldn’t have been connected to public Internet.
The company has notified all the affected customers and they’re currently working on addressing the issue.