Quick heal is one of the best antivirus softwares available.its security in network or any internal problem is recommendable.its firewall prevents us to visit any website that is corrupted or has chance to inject viruses in the computer.when any external drive is inserted, it automatically scans it and takes care of any viruses within a short period of time.most of all, my computer hasn’t faced any problem caused by viruses for a year and a half ever since I installed it.it is a good antivirus and I recommend it.