Symantec 10067161 Product Manual - Page 136

136 Protecting your files and data About the Norton AntiVirus scans Prevalence file. Indicates the community usage level of the file. The search results are grouped in to the following categories: 1 Very Few Users: Shows the files that have very low user prevalence. 1 Few Users: Shows the files that have average user prevalence. 1 Many Users: Shows the files that have very high user prevalence. You can also use the community usage of a file to determine the legitimacy of the file. Symantec uses a stringent statistical method to evaluate the trustworthiness of a file and to classify the file as a Good file.