While browsing the internet today, a pop-up window appeared, informing me that I had a critical security warning and all my system resources had been shut down. The poorly presented pop-up was replete with grammatical and spelling errors, which is usually a good way to detect computer scams. Do not call the included number and give them remote access to your computer and your credit card number. For more discussion go to https://discussions.apple.com/thread/6792202?start=0&tstart=0
This is almost as good as the previous scam which purported to be the RCMP freezing your computer for copyright violations, which however could be forgiven by going to Petro Can and withdrawing a UKASH VOUCHER FOR $100 TO PAY THE FINE.
Article: http://fortune.com/2015/10/22/apple-mac-tech-suppot-scam/
Dave Tarris