modeBlock 
  A Boolean that determines whether CloudFront includes the mode=block directive in the X-XSS-Protection header.
For more information about this directive, see X-XSS-Protection in the MDN Web Docs.
A Boolean that determines whether CloudFront includes the mode=block directive in the X-XSS-Protection header.
For more information about this directive, see X-XSS-Protection in the MDN Web Docs.