No legitimate entity would ask for this information via an e-mail. A legitimate organization, such as your bank or FAU, already knows your faunetid, and most likely date of birth. They would have no need to ask for it.
OIT does do account audits for department and courtesy account, but when we do we ask only that you let us know you are still using the account. What's more, you will see that the e-mail is coming from an address at FAU: email@example.com. If the address does not end in "fau.edu" it is not from FAU.
It is a smart practice to never provide personal information in an e-mail. Lastly, FAU would never ask for someone's faunetid and password via e-mail.
For more information on phishing and keeping your personal information secure, go to the OIT Network and Security site (http://www.fau.edu/oit/network) and the OIT News security edition (http://www.fau.edu/oit/about/irm_news/irmnews_0601.pdf.)