Kingsoft Co. Ltd is a leading Chinese anti-virus software company that produces Kingsoft (DuBa) Internet Security Suite (KISS for short). KISS is popularly known as DuBa in China, and is also available in Japanese and English versions.

This SonicWALL signature identifies legitimate Kingsoft DuBa update traffic. The primary purpose of this signature is for bandwidth management when used in the Application Firewall feature.