Based on the pictures you provided, it appears that the white circle inside your second monitor's taskbar is associated with Kaspersky Internet Security. This is likely an indicator of an ongoing process or a notification from the security software.
The purpose of this white circle could vary depending on the specific version of Kaspersky Internet Security you have installed. It could indicate that a scan is in progress, that a threat has been detected, or that the software requires your attention for some reason.
To better understand what this white circle represents, you can take the following steps:
1. Hover your mouse cursor over the white circle and see if any tooltip or text displays, providing more information about its purpose...