Until about a month ago, i never had a pop up or pop under on my Macbook. I've had it for about 3 years. Is this a symptom of spyware/malware, especially since it is advertising a "Mac Cleaner" that I have been warned against? How do I get rid of it?
I believe it is Snow Leopard. I also have Firefox, but usually use Safari. I did go into my settings and turn on the firewall, which was off before. I'm just concerned that there may be some type of virus or malware already on the computer.