Recently a new (zero-day) exploit that attacks Adobe Flash Player and distributed through the Angler Exploit Kit, delivers malware that takes control of your computer to commit click fraud. This exploit is spreading extremely fast and has now been detected on some of the top 500 most visited websites.
I recommend you update to the latest Adobe Flash player, which has been recently patched. Be sure to uncheck the optional offer for the McAfee Security Scan Plus utility if you don’t need it. If you already have good anti virus software installed, you don’t need this extra program