That gives you more watertight protection, and means you can run an anti-malware app as your frontline protection against malware, with no need for an antivirus (at least in theory). Real-time protection simply means that the anti-malware tool has a constant shield up, scrutinizing every file being introduced onto your system (and the processes currently running) for anything suspicious. Malware removal software can give you more than just on-demand scanning, though, and some apps offer real-time defenses in the same vein as an antivirus. That might only be a PUP, and not outright malware, but still, it could be something that you don’t want on your system, and would otherwise have sat there if you hadn’t plumped for a second opinion.
In other words, the tactic here is to rely on the antivirus in the main, but to run a manual scan with a second line of defense – the anti-malware – every now and then, just to see if it picks up on anything that the antivirus could have missed. This on-demand scanning is present with all anti-malware software, and one approach that some folks take is to install a freebie malware removal app just to sit on their system as a backup to a primary antivirus. (You’re better safe than sorry in these cases, more than likely, but occasionally legitimate apps can be flagged, and you may want to ignore warnings in these cases). These don’t have to be quarantined, as they’re not actively doing any harm, so it’s up to you whether to take action on those. As well as malware, Potentially Unwanted Programs (known as PUPs for short) may be reported in scan results, which are, as the name suggests, apps that you might not want on your system (a good anti-malware app will explain why they’re possibly undesirable).
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