Just talked to one of the guys from MM, who's at Quartzite, and he said that they get about 1 in 10-15 people trying to log in that have this issue. Problem is that their site is almost 20 years old and has never been updated on the back end, so it's either got code that's vulnerable to exploits or it's actually been hacked and is spreading malware. Personally, I think it's the former. FWIW, I have Avast on my home Win7 Pro 64 laptop (Firefox) as well as my Android phone (Chrome). Both block me. When I added an exception to Avast on my laptop, my ASUS =router= blocked me. My dad has AVG (paid) on his Win7 Pro 64 desktop (Firefox), and I'm blocked there, too. All I can say is that MM must be doing pretty well if they can afford to ignore 8-10% of the people who are trying to access their site. (shrug)
Lyle