This is a very quiet list, but I have a question and hope to receive some input. I have a PC which runs Windows 7. About a month ago, I received an email from UPS which turned out to be spam. Because I was expecting an important package shipped by UPS I acted hastily and clicked on the link in the email which said "contact us". This link took me to the UPS website. I did not open the attached supposed invoice. When I phoned UPS they knew nothing about the email. The next day I received a second similar email and phoned UPS again. The agent advised me to forward the emails to fraud.UPS.com. Because I had clicked on a link in the first email, I ran a complete virus scan with Microsoft Security essentials and received the status "proptected". Several weeks later, my computer suddenly shut down and restarted with the message that an unauthorized shut down had occurred. Someone advised me to install "malwarebytes". I installed the free program and scanned the computer; no threats were found. Everything seems fine. Yesterday I ran malwarebytes again with the latest updates and no threats were found. The same with another full scan with Microsoft Security Essentials. I hear the wstatus "protected", but I do not hear the message "no threats found" as I used to with Windows XP. I still feel anxious because I have read stories of "Trojan horses" lurking and not being seen by virus protection programs; one person said that they had to run their computer in "safe mode" to detect the threat. Do you think that I am in fact safe or should I take additional actions to check my computer and if so what actions? I do shop a lot online and so am concerned. Lori C.