I am using Avast antivirus from last three years at my Home PC and from last one year at my new laptop which I have purchased last year.
Avast antivirus is a very good antivirus.its free version is also available. three free version is also very effective and shields and protects my PC and laptop from virus and malware attacks. This also gives me protection from hackers who tries to enter in my PC and laptop.Avast is very simple in use.It is designed such that even one who is not familiar with it can use it.
It is also available for android users.this is available at Google play store at free of cost.I am fully satisfied by Avast free version so I am also using it on my android mobile phone. It protects my phone from virus which I will get from net and through OTG.