"Phishing"
a definition
Phishing is a particularly
popular scam where a party tricks a user into providing a username
and password or other personal information necessary to commit
identity theft, such as a Social Security number, bank account
number, PIN number, credit card number, mother's maiden name.
In many cases, this party creates an official-looking web page that
asks for this information. Users will often receive a link to this
phishing page via an email which claims to come from an
official-looking (but likely forged) address. Given the nature of
the web, it's easy to stumble upon these fraudulent websites by
following links that you find in your email, on the web, or in IM
messages.