Installing multiple antivirus will enhance security
Myth
I can install multiple antivirus on my PC in order to increase security. The more Antivirus there are the more secure it is.
Reality
FALSE
Explanations
On the contrary, there are more antivirus installed on your PC, the more you will encounter problems:
Slowdowns, conflicts between anti-virus, crashes, and other more or less serious ...
This also applies to firewall: install only one Firewall software.
The only exception is the antispyware software(several antispyware does not destabilize the machine).
Minimum requirements for your PC: one antivirus software, with an antispyware and a firewall.