What I'll write here is obvious for many, but there is anyways people who don't know it and distribute their files to antivirus companies for themselves.

This is what you must not do. I already replaced many stubs for free even if it was customers fault since obviously they didn't know, but ignorance will not be an excuse from now on. Customers will have to pay to get a replacement stub if they don't follow rules below:

  1.  Do NOT use VirusTotal, Anubis, and similar services to scan your files. It has been known for years that these services distribute your file among the antivirus industry. Use only safe services where you are sure that your file will not be distributed, such as scan4you.net.
  2. Before even downloading stubs to your computer, make sure that the functions in your security software (if present) which send new files to their company are disabled. For example, if you have Nod32, make sure that ThreatSense.net is disabled. 
 Regards