F-Secure, which releases an annual list of the most dangerous search results, said the malicious links can infect unsecured computers with malware, losing people both time and money.
The company said this season's most dangerous terms are: Kinect for Xbox; Call of Duty: Black Ops; Jewelry; Amazon Kindle; Toys; Black Friday Deals; Cyber Monday Deals; Toy Story 3; Susan Boyle; and Apple iPad.
5. Go directly to retailer or corporate sites.
During the holidays, consumers get flooded with e-mail messages promoting special sales and offers.
But McAfee's Dang warned that, whenever possible, go directly to the company's website, instead of clicking on links in e-mails.
Cybercriminals increasingly launch so-called phishing sites, which emulate a commerce site or retailer, but actually are designed to steal personal information.
He also said that if you get an e-mail from credit card companies, you might be better off calling the company directly than clicking any links provided.
"Rather than replying back to e-mail or correspondence that are suspicious, go straight to the source," he said.
6. Make sure sites are secure.
Before you key in your credit card information, make sure the website you're using is secure.
Look in the address box in the browser for the "s" in "https://" and in the lower-right corner for the lock symbol.