Mozilla is responding to challenges from browser rivals Apple, Microsoft and Google by reviving private browsing mode features in Firefox.
The approach has been considered before but was sidelined in the run-up to the release of Firefox 3.0. However, the inclusion of similar privacy protecting features in Apple’s Safari and, more recently Google Chrome and IE 8 beta 2, has revived interest in the approach and spurred a decision to incorporate the technology in the first beta of Firefox 3.1, due out next month. The decision was made at a meeting of Mozilla developers on Tuesday.

