Trackware/adware Classifications
Numerous antivirus companies have assessed Alexa's toolbar. Symantec classifies the toolbar as "trackware", while McAfee classifies it as adware, a "Potentially Unwanted Program." McAfee Site Advisor rates the Alexa site as "green", finding "no significant problems" but warning of a "small fraction of downloads ... that some people consider adware or other potentially unwanted programs." Windows Defender has classified the toolbar as malware, considering it a trojan.
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