Some engines allow you to scan files using heuristics, which can detect viruses that are not yet in the engine’s virus definition database. Enabling heuristic scanning for engines will increase detection of potential new viruses, but will also increase the false positive rate (detection of clean files as infected). Also, enabling heuristic scanning can increase the engine's scan time.
For example, ESET has heuristic scanning turned off by default because in the past customers had concerns with the performance. You can enable the heuristic scanning feature for any engine via the MetaDefender Core Management Console.
This article applies to MetaDefender Core v3
This article was last updated on 2017-12-20