When connected to and using the Internet, do not respond to popup windows requesting that you click “OK” for anything. Use a popup blocker and only allow popups on websites you trust. If a window pops up on your screen unexpectedly, DO NOT close the popup window, either by clicking “okay” or by selecting the X in the upper right corner of the popup window, especially if the pop up is informing you that your system has a virus and suggesting you download a program to fix it. Do not respond to popup windows informing you that you have to download a new code, driver, or special program for the web page you are visiting. Some of these popup windows are actually trying to trick you into clicking on “OK” which will allow it to download and install spyware or other malware onto your computer. Be aware that some of these popup windows are programmed to interpret any mouse click anywhere on the window as an “OK” and act accordingly. If you encounter this kind of pop-up window, disconnect from the network and force the browser to close (in Windows, hit “ctrl + alt + del” and delete the browser from running tasks. In OSX, right-click the application in the bar and select “force close”). You should save any files you have open and reboot the computer, then run your anti-virus software.