I had a run-in with this stupid thing this morning, so thought I'd pass along a heads-up for those who are not computer savvy.
A new malware attack is going around, nicknamed "Lizamoon" it is the usual SQL code line that redirects your browser to a web page that does a fake scan of your computer, and of course finds all sorts of viruses that you have to delete right away with their special software! It also has an annoying pop up window that blocks you from being able to just browse away.
There is no way to know if web page you are going to is infected, so once this pops up you have to deal with it, which is fortunately very simple. This piece of crap has infected a huge number of websites, not just the usual culprits, so you are likely to run into it no matter how safe your browsing usually is.
1. Do NOT click to download or run the app. This is a no-brainer.
2. Do NOT click to close the pop up window, it usually is coded to give permission to run the app as though you had clicked "yes" no matter what you click on, including the red X button that normally closes a window.
3. Hit alt-ctrl-del and bring up the task manager. Highlight your browser in running apps, and close it using task manager.
4. Delete your temporary internet files and browsing history using CCleaner (recommended) or manually. If your browser asks to restore session, tell it no. Not an essential step if you use an old browser, but better to be safe and not have any links or code from this hanging around. Also after closing this way, some browsers will restore session automatically if you don't delete the temp files, and that will just take you right back to the malware.
5. I call first dibs to hang the originator of this by his family jewels with piano wire.