Before you open that attachment, remember that attachments in unexpected email messages or from unknown senders often harbor malware that could infect your computer. And, fraudulent web addresses will lure you into providing your login credentials or personal information. Think before you click. Learn to recognize phishing attempts - play Anti-Phishing Phil and Anti-Phishing Phyllis.
Install and run Identity Finder which locates Personally-Identifiable Information (PII) on your computer.