Updating Platinum Internet Security means updating the virus signature file (the file that detects viruses - some 20 new viruses and threats appear every day) as well as the program itself.
Updates can be carried out on a daily basis either automatically or manually. If you have configured Platinum Internet Security to update itself when necessary (automatic update), the program will always be up-to-date. Platinum Internet Security will update itself when it detects a connection to Internet, when necessary.
In order to know how up-to-date the program is, click on the Home menu in the Control panel. This information is given at the beginning of the Program status section
You can also find out how up-to-date your Platinum Internet Security is through the automatic protection icon in the Windows system tray (next to the system clock). If this icon appears (the automatic protection is loaded and enabled) and you place the mouse pointer over it, the date that the program was last updated will be displayed.
For further information consult the What is an update? section in this Help.