Advice from the BBC re the TalkTalk hack:
Be wary if you receive any telephone calls claiming to be from TalkTalk, especially if the caller asks you for private information.
Be suspicious if an email relating to TalkTalk asks you to reply with personal information or click on a link. Criminals can set up official-looking websites to harvest your account details.
Look through your recent transactions for any payments you do not recognise, even if they are very small.
"People will try and take a small amount first. TalkTalk has four million customers. If they do four million ÂĢ1 transactions, that's not a bad haul," said Mr Dresner.
If you spot any unusual activity you should contact your bank and Action Fraud on 0300 123 2040.
TalkTalk is advising customers to change their account password as soon as its website is back up and running.
It is especially important to change your password on other websites, if you have used the same one across many accounts.
http://www.bbc.co.uk/news/technology-34615692