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Windows XP and Firefox browser amass worst vulnerability record over past 25 years

Sourcefire study looks at software with highest number of high-severity vulnerabilities

By , Network World
February 25, 2013 09:00 AM ET

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For high-severity vulnerabilities, the product Windows XP earns the dubious position of the No.1 spot. "What's also interesting here is that of the top four browsers that have a total of 90% of the browser market share, Firefox has the most vulnerabilities in every category, followed by Chrome, then Internet Explorer and finally Safari," the report concludes.

Ellen Messmer is senior editor at Network World, an IDG publication and website, where she covers news and technology trends related to information security. Twitter: MessmerE. E-mail:

Read more about security in Network World's Security section.

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