Always treat email from people or organizations
you do not know as suspicious, especially if the advertised
benefit of reading the email or activating any attachments is
attractive to you.
Consider whether the tone of the message or
the language used is consistent with what you would expect of
the organization or the sender.
Keep your computer protected with a reputable
anti-virus package, and ensure you keep it up to date with the
latest virus profiles.
Never give personal details or passwords out
over the internet unless you have initiated the transaction
and you are confident of the identity of the receiving party
(for example by ensuring the transaction is encrypted).