Most modern web browsers offer private browsing modes, but how private are they? This session will review the privacy offered by these features. The presenter will discuss the results of research he conducted on the private browsing modes available in several popular web browsers. These results will help attendees to understand the level of privacy they are actually achieving when using private browsing mode. Best practices for forensic examiners will also be discussed, so that examiners can ensure they are obtaining all the evidence that might be available to them.