What is phishing?
Phishing is where fraudsters send bogus messages which appear to be authentic and from legitimate organisations. The messages usually contain links or attachments which, if accessed, will take you to a fake website and prompt you for your online banking details. The key difference with the fake site is that you will be asked to confirm your full security details, rather than the selected pieces of information.
The fraudsters then use your details to access your account(s) and steal your money.