Starting from Acunetix Version 12 (build 12.0.190325161), Acunetix marks some vulnerabilities identified during a scan as verified. Verified vulnerabilities are vulnerabilities that Acunetix has detected with 100% certainty in the web application being scanned and thus they do not need to be manually verified.
Acunetix can verify vulnerabilities with or without AcuSensor, although AcuSensor does help in the verification of some vulnerabilities.
In most cases, vulnerabilities that are not marked as verified are valid vulnerabilities too, however, the way that the vulnerability was detected does not allow Acunetix to be 100% certain that the vulnerability exists. In general, Acunetix has a very low rate of false positives.