I believe the new flash player versions do respect the private browsing modes of browsers. Back when I used to use windows, I used to touch two files called "#

I believe the new flash player versions do respect the private browsing modes of browsers. Back when I used to use windows, I used to touch two files called "#Security" and "#SharedObjects" in the flash player app data folder, which prevented it from downloading anything at all. In retrospect, it was an overly heavy-handed way of doing things :)