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 (1.0), but you can try downloading it from the developer's site
Download version 1.0 from the developer's website
Version: 1.0 (x86)
Date update: Oct 22, 2020
File name: putty.exe
Size: 472 KB
