I received this from an identity protection service today. Hope it helps!
While it’s important to protect your confidential information all year long, it’s critical to take extra precautions during tax season. In 2012, be especially aware of IRS-related scams, and follow a few simple guidelines for safety. First, the IRS will never ask for your Social Security number or financial information over the phone or via email, so if you get a call or email, hang up or delete the email. Second, when it comes to receiving mail from the IRS, read the documents carefully to ensure you don’t fall prey to a tax-related scam. Lastly, if you have any doubt whether a contact from the IRS is authentic, call the IRS directly to confirm before giving out any personal information.