We know that many Antivirus (AV) tools flag ZAP and some of the ZAP add-ons. For example the ZAP 2.15 Windows installer was flagged by 3 / 63 security vendors. In particular the Active Scan Rule add-on is often flagged: v65 was flagged by 10 / 63 security vendors. Detecting viruses is hard, especially as viruses try to disguise themselves. This means that AV tools try to detect potentially malicious activity or code.