Harith Aslam :
ok so would the two which are already installed do the job for me?
Keep using Avast and install Malwarebytes.
More Than One Antivirus:
Good or Bad?
The simple answer is, “No, it’s not okay to run more than one antivirus program at the same time.”
It makes sense that we, as computer users, assume that if we have more than one antivirus program on our computers, we will be better protected from outside threats. We all think that if one of them doesn’t catch something, the other surely will. Well, this just isn’t true. Using more than one program (or even multiple versions of the same one) will likely cause you some problems. Here are a couple of the biggest ones spelled out for you.
You will use up too many resources on your computer. Doing this will more than likely slow your system down and it will truly affect your computer’s performance.
You could receive false virus alerts. Antivirus programs work by using an actual virus to detect another one on your computer. So, if you have more than one piece of software running at the same time, each program will think the other is a virus. The two programs will conflict in many ways, but this is one of the majors.
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/www.worldstart.com/more-than-one-antivirus-good-or-bad/