We understand your concerns and Copernic Desktop Search was designed with your privacy in mind.
Rest assured that the indexed data stays on your computer will never be transferred to us or any of our partners.
If you send us your logs for support purposes, they only contain informations about paths where your files are indexed and file names only. Logs do no contain any document content except file's name and folders name.
Furthermore, computer activity is solely monitored to enable or disable the indexing process.