Prohibit Use of KBA as Single Factor for AI Voice

  • Release version: Australia
  • Updated March 12, 2026
  • 1 minute to read
  • Use a system property to prevent Knowledge Based Authentication (KBA) from being the only factor of authentication required to authenticate to the platform for AI voice.

    Use the glide.voice.authenticate.allow_kba_as_only_factor system property to prevent security questions from being the only factor of authentication required to authenticate to the platform in the AI voice agent authentication feature. Knowledge Based Authentication (KBA) allows users to answer security questions as an authentication factor. Learn more about authentication factors for AI voice agents at .

    Ensure that the glide.voice.authenticate.allow_kba_as_only_factor system property is set to false.

    More information

    Attribute Description
    Configuration name glide.voice.authenticate.allow_kba_as_only_factor
    Configuration type System Properties (/sys_properties_list.do)
    Data type Boolean
    Recommended value false
    Default value false
    Fallback value false
    Category Authentication
    Security risk
    • Severity score: 3.3
    • CVSS score: Low
    • Security risk details: Allowing users to authenticate with a single factor increases the risk of account compromise if that factor is compromised. Enforcing Multi-factor Authentication (MFA) is recommended. If single-factor access is allowed, then KBA security questions aren't recommended as the single factor. Security questions can be guessed, learned through social engineering, or obtained from public records, increasing the risk of account compromise.
    Functional impact If KBA can’t be used as a single factor of authentication, then users must use another form to authenticate to the platform for the Voice Authentication feature, such as SoftPin or SMS OTP.
    Dependencies and prerequisites AI voice agent authentication feature is setup and enabled.