Use advanced filters for statistic.
+`avast`: `<boolean>` ('default =' `0`)::
+
+Use Avast Virus Scanner (/bin/scan). You need to buy and install 'Avast Core Security' before you can enable this feature.
+
+`clamav`: `<boolean>` ('default =' `1`)::
+
+Use ClamAV Virus Scanner. This is the default virus scanner and is enabled by default.
+
`dailyreport`: `<boolean>` ('default =' `1`)::
Send daily reports.