Not clicking on any links, even if you don't enter your account details, as it may confirm your email address is valid and leave you open to further hoaxes and spam
Clicking on a link risks your computer being infected with malware that could distribute the same message to all the email addresses including those of your work colleagues, family and friends stored on your computer
HM Revenue and Customs never asks you to confirm/update/verify your account data by visiting a given link, as you will be taken to a spoof website where your details will be captured for phishing
A more focused type of phishing that uses clever tactics to target a specific individual or an organisation seeking access to sensitive information, usually conducted for financial gain or to carry out espionage
You should be careful when disclosing your username and password, and a phone call to the relevant people in the company should be sufficient to find out whether or not the request is genuine