update disclaimer

README.md

@@ -8,6 +8,8 @@ Transfer.sh currently supports the s3 (Amazon S3), gdrive (Google Drive) provide
 This project repository has no relation with the service at https://transfer.sh that's managed by https://storj.io.
 So far we cannot address any issue related to the service at https://transfer.sh.
 
+The service at https://transfersh.com is of unknown origin and reported as cloud malware.
+
 
 ## Usage