After running a Plesk security check in the watchdog module, I see a message similar to the following: Your system contains some unknown version numbers. Please run Rootkit Hunter with the --update parameter or fill in the contact form (www.rootkit.nl) .
Rootkit Hunter found new package versions that are not listed in its database.
Rootkit Hunter usually updates the database automatically. You can force the update with the following command:
[$PRODUCT_ROOT_D](/en/952)/admin/sbin/modules/watchdog/rkhunter --configfile [$PRODUCT_ROOT_D](/en/952)/etc/modules/watchdog/rkhunter.conf --update
Before executing the command above, replace $PRODUCT\_ROOT\_D with /usr/local/psa or /opt/psa.You may get the value of the variable $PRODUCT\_ROOT\_D in the file /etc/psa/psa.conf on your server.