You can Baidu it.
Personally recommend Tencent computer housekeeper.
Good reputation, no need to install security.
The anti-virus effect is combined with red umbrella, 1 2 in anti-virus,
The operation is convenient and simple,
You don't need to download security guards or anything,
There are also security guards who use anti-virus software to occupy memory, but they will get stuck if they don't say it.
There are many common solutions to problems in computer clinics.
The biggest advantage is that the memory is very small, and playing games will not cause game cards.
This is also an important factor in my choice of it.
Basically can solve the common Trojan virus,
I have used 1 year or more, and there is no problem.
You can also speed up the upgrade of QQ every day, and you can exchange physical gifts for tasks.