360 Total Security Essential was released first. It was original called 360 Internet Security. Also, it is updated less frequently than TS is. There have been 21 product updates for TS this year, but only 3 for TSE. The actual version numbers are a bit misleading, as the first version of TSE was v2 and for TS, it was v4. Here is explanation of why they are not tested. https://www.scmp.com/tech/apps-gami...dispute?_escaped_fragment_=&edition=hong-kong Well you can see from tests in the malware Hub at Malware Tips, that it does not do so well. However, by looking at VirusTotal scans of recent malware, it is almost always one of the first antiviruses to detect new threats. It is let down by its behaviour blocker, which could be better, but is definitely not the worst.