You can also try Tools>Options>Advanced>Warn me when websites try to redirect or reload the page.
Actually, you'll always be better off having an all in one suite that has AntiVirus, ad blocker, firewall, malware, root etc. I've been using Kaspersky Internet Suite since 1997 and it's always come through for me, plus it's not a resource hog like some other brands. If you check Fry's Electronics website, they usually have this on sale for $50 with a mail in rebate for $50. So, in essence it's free after you receive the rebate. Fry's has been pretty good in processing their rebates.
There are freebies out there like ZoneAlarm, Norton and more, but they aren't as capable. Comodo offers a freebie also; I read good reports about it.