If you receive an email with the subject “Here you have” or “Just for you” don’t open it because it can contains links to a virus. The email looks like this:
Subject: Here you have or Just for you
This is the document I told you about, you can find it here.
[ Link ]
Please check it and reply as soon as possible.
This is the Free Download Sex Movies, you can find it Here.
[ Link ]
Enjoy Your time.
Those links lead to an executable in the form of SCR file that tries to infect your machine.
If, for some reason, you get infected, McAfee has released a tool to detect and repair the threat:
McAfee Stinger stand-alone tool
The virus tries to stop and delete security services. Remember that the best way to be safe is having an updated computer, if you are experiencing problems check: Windows Update Troubleshooting.