One anti virus/spyware program is enough

When it comes to protection, surely you can't have too much, or can you? Well, yes you can actually and some people are reducing the performance of their computers by forcing it to work with layer upon layer of security. On several occasions I've been asked for advice about security and the person has revealed that they are running two or even three anti virus and anti spyware programs, or they run an anti virus program and then not realising that it also checks for spyware too, go and install an anti spyware program too or leave Windows Defender running at the same time. They also install a firewall and have Windows firewall running at the same time too. Two anti virus programs are not better than one and they aren't guaranteed to catch any more viruses. They just get in each others way and limit the performance of the computer.

When you choose an anti virus program, check whether it also scans for spyware too and if it does, don't install any anti spyware software and disable Windows Defender. When you install a firewall, turn off Windows Firewall because it's not needed.

If you're looking to buy anti virus/spyware software and want to know what is best, go to the Virus Bulletin website and check out the history for each vendor (free registration required).