No. Sandfly is completely self-contained. It sends no data back to us and does not ship potentially confidential data from your systems off-site for analysis. Even if an attacker were to compromise our own (Sandfly) systems, it would never reveal any customer operational data. We simply do not collect and store any information to leak. This is intentional.
Sandfly is designed to work on networks that are on the Internet, those heavily segmented or those that are air-gapped. Sandfly easily works in isolation without any need to communicate externally to anyone.