In reply to:
Customers of UK net provider Plusnet have been told to change the password for their account following a break-in by malicious hackers.
This is true, I received an email from Plusnet outlining the break-in and advising that I should change my password because of it. A precautionary measure following the attack.
In reply to:
In the attack, the hackers gained control of a Plusnet's mail server and stole a list of e-mail addresses.
This is true. As can be seen by all the spam.