Questions:

1. Do you have an anti-virus software running on your computer?

2. Do you have a firewall running on your computer?

I only ask this because for some reason there are a bunch of Mac users who think that their computers don't get viruses. That assumption means that they don't buy antivirus software or firewall software to provide security for their computers.

Like basicwiz I haven't experienced the flash issue that you are having. It's been more than 5 years (maybe more) since I've even had malware problems of any type and the reason is because I have the extra security running on my computer and I increased my knowledge on how malware typically gets on a computer.