Virus scam on Macbook Air
The group helped me with a similar question last week-- dialog screen plus web page, plus audio warning that freezes Chrome and won't let me close the tab or the browser. Can't screenshot it but this is URL: http://www.systemalertz.net/mac-alert.html?traffic_source=2858
Last time I was able to force quit Chrome but this time I can't shut Chrome down. Any help would be greatly appreciated!
Thank you!
MacBook Air, OS X Yosemite (10.10.2)