“If you’re a Mac user, you might want to look out for an increase of unwanted advertisements popping out from your web browsers.

Security firm McAfee released a report this week that showed a big jump in 2016 regarding malware hitting the Mac operating system. The McAfee report said there were 460,000 malware instances affecting the Mac OS in the fourth quarter of 2016, an over 700% jump from the previous year during the same quarter.

McAfee’s new report confirms similar research by other cybersecurity firms in recent years that show an increased prevalence of malware affecting Apple computers. Essentially, as more people buy Apple aapl computers, there are more possibilities for malware to infect the machines.”

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Author: Jonathan Vanian, Fortune