Webroot had the worst results out of 20 products tested by AV-Comparatives in the September 2012 File Detection Test of Malicious Software, both in terms of malware detection rates and false alarms. Webroot detected less than 80 percent of viral samples, much worse than the 94.4 percent rate of the second-lowest detecting product. Webroot inappropriately flagged 210 clean files, raising as many false positives as the other 19 products tested combined. According to AV-comparatives, the "results and misses have been confirmed with several tests and also by the vendor."