Phishing is a fraudulent attempt to get sensitive information like your passwords or credit card numbers by pretending to be a legitimate source, like your bank.
There are other kinds of Internet scams as well.
And the people who perpetrate them are very sophisticated.
That's why if you've received an e-mail message that sounds a little odd, it pays to do some thinking and research before you reply.
Check out these useful resources:
What to do if you receive a questionable advertisement for computer products or services
U.S. Department of Justice Internet Fraud page
If you have questions about the nature of an e-mail you've received, contact the IT User Advocate at itua@umich.edu. The User Advocate can also assist with e-mail of a harassing nature, or any other case of abuse of computing resources.