Parenting site Mumsnet hit by data breach
Mumsnet has reported itself to the UK's data protection watchdog after an upgrade let people see details of other accounts.
The company has admitted a huge data breach involving 5.9 million payment cards and 1.2 million personal data records
Dixons Carphone, the company which owns Carphone Warehouse, has admitted a huge data breach involving 5.9 million payment cards and 1.2 million personal data records.
It is investigating the hacking attempt, which happened last year.
Dixons Carphone said it had no evidence that any of the cards had been used fraudulently following the breach.
There was "an attempt to compromise" 5.8 million credit and debit cards but only 105,000 cards without chip-and-pin protection had been leaked, it said.
The hackers had tried to gain access to one of the processing systems of Currys PC World and Dixons Travel stores, the firm said.
The 1.2 million personal data records accessed by the hackers consisted of non-financial information such as names, addresses and email addresses.
Carphone Warehouse said it had no evidence that the information had left its systems or resulted in any fraud, but it was contacting those affected to advise them.
Dixons Carphone chief executive Alex Baldock said it was "extremely disappointed" by the data breach and "sorry for any upset",