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Multiscanning is running multiple anti-malware or antivirus engines concurrently. Traditionally, only a single engine can actively scan a system at a given time. Using multiple engines simultaneously can result in conflicts that lead to system freezes and application failures.[1][2] However, a number of security applications and application suites have optimized multiple engines to work together.


Testing agencies published results showing that no single antivirus engine is 100% effective against every malware threat.[3][4] Because each engine uses different scanning methodologies and updates their malware definition files at various frequencies, using multiple engines increases the likelihood of catching malware before it can affect a system or network.[5]

Notable vendors[edit]

See also[edit]


  1. ^ Clash Of The Antivirus Apps. Smart Computing Article (2007-01-05). Retrieved on 2012-02-29.
  2. ^ System Locks With Multiple Anti-Virus Programs | Dell. (2005-03-15). Retrieved on 2012-02-29.
  3. ^ Why one virus engine is not enough. GFI White Paper.
  4. ^ AV-TEST. Retrieved on 2012-02-29.
  5. ^ The advantage of multiple anti-virus engines on server products – Forefront Team Blog – Site Home – TechNet Blogs. (2007-10-19). Retrieved on 2012-02-29.
  6. ^ Bitdefender Releases Carrier IQ Finder for Android.
  7. ^ Complete coverage of the G Data Internet Security 2010 Antivirus & Security Software. PCWorld (2009-05-28). Retrieved on 2012-02-29.
  8. ^ HitmanPro
  9. ^ New Microsoft Forefront Software Runs Five Antivirus Vendors' Engines. Dark Reading (2010-05-05). Retrieved on 2012-02-29.
  10. ^ MetaDefender Core - Advanced Threat Prevention Development Platform