These related Help pages may answer your question:

• How do I know if the email I received from eBay is real or a spoof?
  If you receive an email supposedly from eBay that contains links and asks for your personal and account information, be careful. Click the link above to learn how to recognize fake eBay emails and sites, take our Spoof Email Tutorial, and report spoof emails to eBay. . . .
• How do I recognize fake (spoof) emails and Web sites?
  If you receive an email that requests sensitive information and includes links to a Web page, be very cautious. eBay will never ask you to provide passwords, financial account numbers, or other confidential information by email, or through a direct link to an eBay page. . . .
• How do I report unauthorized use of my account?
  First, check with family members or others who use your account to be sure that they haven't made any changes. Then try to sign in to your account. If you're unable to sign in, you can contact eBay for help. . . .