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 (6.2), but you can try downloading it from the developer's site
Download version 6.1 from Mac Informer
Version: 6.1
Date update: Feb 7, 2022
File name: sliverv6.1.dmg
Size: 379 MB