A hacker has stolen the names, addresses and bank account numbers of about 2 million Vodafone Germany.
The company said on Thursday that the hacker, who had gained access to one of its servers, had not obtained any passwords, security numbers or connection data.
"It is hardly possible to use the data to get direct access to the bank accounts of those affected," the mobile phone network operator said in a statement.
But it warned customers that ''phishing" attacks involvng fake e-mails could be used to try to trick them into revealing more details.
