360 security guards are the best.

1.360 Security Guard has more functions than Kingsoft Internet Security (Kingsoft Internet Security requires members for some functions).

2.360 security guards are better than Kingsoft in antivirus (Kingsoft has made several false positives, but other antivirus software has not been found out).

3.360 security guards are better than QQ computer housekeeper in antivirus 10000000000 times (the time for scanning virus cards is much less than that of Jinshan).

4.360 security guards occupy less memory and are faster than QQ computer housekeeper (if you use QQ computer housekeeper on old computers, the boring turtle speed of old computers will become slower and you will collapse).

The function of 5.360 security guards is a little more and better than that of QQ computer housekeeper (it is not bad to optimize with 360 security guards).

I think 360 security guards must be installed (it is recommended not to install QQ computer housekeeper, which will slow down the speed)

PS: If your computer configuration is good and you really want to speed up the level of QQ, you can consider installing 360 security guards +QQ computer housekeeper, and you can have your cake and eat it. I don't think QQ level is useful. Tencent won't give you candy no matter how high your level is. (also won't give Q coins)

It is recommended to install the latest beta version of 360 with more functions.