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Virus Bulletin (VB)

Overview, Goals, and Scope


The VBSpam certification is awarded to products that successfully detect and accurately process spam, newsletters, malicious, and non-malicious email to “provide a unique insight into the performance of the world's leading spam-filtering technologies.” Separately, the VB100 certification—testing of anti-malware capabilities--is “awarded to products that meet the basic standards required to be recognized as legitimate and properly functioning anti-malware solutions.”

In testing conducted in September 2021, Fortinet FortiMail had a spam catch rate of 99.8%, earning a VBSpam+ certification. Fortinet FortiClient detected 100% of malware, earning the VB100 certified status.


The purpose of Virus Bulletin VBSpam and VB100 testing is to inform IT and IT security decision-makers with insights into the effectiveness of spam filtering (associated with email) and anti-malware solutions (present on Windows endpoints) available in the marketplace today.

Fortinet participates in and consecutively earns Virus Bulletin’s VBSpam and VB100 certifications. Tests are performed quarterly and bi-monthly, respectively.


  • FortiMail (VBSpam)
  • FortiClient (VB100)

Key Principles


Validated protection against advanced threats including malware and spam.


Extremely high efficacy in detection of malware.


High accuracy in detection of spam and malicious emails.

Download Test Results

Report /Test Result


Last Ten VBSpam Tests for FortiMail

Click here for the latest VBSpam test results for FortiMail.

FortiClient in VB100

Click here for the latest VB100 test results for FortiClient