In "private mode", do browsers store cookies or temporary files (cache) on disk?

Question

When in "incognito" mode (Chrome) or in "in-private browsing" (IE) or "Private Browsing" (Firefox), do any of the browsers store cookies and/or cache temporary files on disk, or is it all in memory?

Solution

Internet Explorer did, or least does, store the information on the disk -- in the Windows\Temp folder. Which leads me to believe the rest of them do too. To store pictures, icons, text, cookies, flash cookies, etc in the memory for each would seem far fetched.

Comments

[Arjan]

The note on the Windows\temp folder is revoked by the author in that very same post you're referring to. Still: things are written to disk according to that post.

[MrWhite]

+1 Thanks for link. The situation may have changed recently with the latest version of Flash/Browsers(?), but Flash never used to respect Incognito/Private browsing. All Flash cookies were saved to disk and retained after private browsing for all to see!

[TechnicalChaos]

I think the answer is interesting but not related to the question.

[SgtOJ]

It is my opinion. I believe if something like that were the case then we, as in guys who follow tech news, would know have saw something about it. Another thing to key in mind is fact that Flash 'cookies' normally still tracked in private mode which are stored on your hard drive. These 'cookies' are accessible by either mode. Which is the reason the FCC is working with Adobe to fix this issue. However, Adobe claims it was never meant to be a way to track users.

[SgtOJ]

Correction... Federal Trade Commission. Here is reference link of what I am speaking of. - paidcontent.org/article/…