McAfee is an anti-virus. Malwarebytes is an anti-malware scanner intended to supplement your existing anti-virus, not replace it.
The Malwarebytes Anti-Malware Protection Module
in the full version uses advanced heuristic scanning technology
to monitor your system and provide real-time protection to prevent
the installation of most new malware. This technology runs at startup where it monitors every process and helps stop malicious processes before they can infect your computer
. The database that defines the heuristics is updated as often as there is something to add to it. Keep in mind that Malwarebytes does not act as a real-time protection scanner for every file like an anti-virus program so it is intended to be a supplement, not a substitute
. Enabling the Protection Module
feature requires registration and purchase of a license key
that includes free lifetime upgrades and support. After activation, Malwarebytes can be set to update itself and schedule scans automatically on a daily basis. The Protection Module is not intrusive as it utilizes few system resources and should not conflict with other scanners or anti-virus programs.