Microsoft-prevalence-based analysis of the File Detection Test

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This Microsoft-prevalence-based analysis report is supplementary to AV-Comparatives’ main report, already published, of the September 2015 File-Detection Test. No additional testing has been performed; rather, the existing test result have been re-analysed from a different perspective, to consider what impact the missed samples are likely to have on customers, according to telemetry data of Microsoft.

Microsoft commissioned this supplementary report. This report is a prototype customer-impact report; improved versions might be provided for future File-Detection Test reports. In this report, customer impact is measured according to prevalence. Essentially, some malware samples pose a greater threat to the average user than others, because they are more widespread. An impact heatmap can be found on

More information can be read also in this Microsoft blog post.

False Alarm Test Report September 2015

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AV-Comparatives releases an appendix report for its False Alarm Test done during the File-Detection Test. The False Alarm Test report contains details about the false alarms encountered by the various products, such a the affected programs, the detection names and the supposed prevalence (according to various telemetry data sources). You can download the appendix False Alarm Test report of September 2015 as PDF here.

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