The scenarios can get even worse, despite your precautions. Imagine: You've decided not to take any chances. You will no longer download any files except from secure sites that you know and trust, such as SecurityFocus.com or Amazon.com. You no longer click on links in email from unknown sources. You no longer open attachments in any email that you were not expecting. And you check your browser page to make sure there is a secure site symbol on every site you visit for e-commerce transactions or to exchange confidential information.