Little-known anti-malware programs display warnings, which are often identified as false positive. Nevertheless, it is recommended to recheck the file with your antivirus software after downloading.
We do not have a download file for the latest version (7.22), but you can try downloading it from the developer's site
Download version 5.9.4 from Mac Informer
Version: 5.9.4
Date update: Oct 20, 2017
File name: arq.dmg
Size: 28.6 MB