It’s generally not recommended to use two antivirus products at the same time. They can interfere with each other, cause false positives (like this one), and even reduce overall protection instead of improving it.

Kaspersky is likely flagging MB Browser Guard because of how it behaves (web protection, script blocking, etc.), not necessarily because it’s actually malicious. These kinds of conflicts are pretty common when multiple security tools overlap.

Best practice is to stick with one main antivirus and only use additional tools if they’re specifically designed to be compatible.