> But a 2-3 second box for each fullscreen transition seems like a > small price.
Seems like a pretty large price to me, given a combination of factors: - significant added friction to a common user action ("start watching this video in fullscreen") - low likelihood that the type of attack this mitigates ("fullscreen spoofing") is successful even without any mitigation, and the relatively high cost/benefit ratio for such an attack - low likelihood that it usefully mitigates a sophisticated attack of this sort - low rate of abuse of pre-existing equivalent functionality (e.g. Flash's fullscreen) Gavin On Sun, Aug 16, 2015 at 12:15 PM, Richard Barnes <rbar...@mozilla.com> wrote: > This prompt is an important part of the security story for fullscreen. > Since a fullscreen web app can hijack your entire browsing session, it's > important that the user know that he's entering fullscreen and not looking > at an actual browser window -- and to know that every time something goes > fullscreen. So if we're going to back off of displaying the prompt every > time, we need to be clear that we're assuming that the user can make this > distinction. > > That honestly seems like a bad deal to me. If the prompt stays up (as > Brian mentions), that's a bug and we should fix it. But a 2-3 second box > for each fullscreen transition seems like a small price. > > --Richard > > On Sat, Aug 15, 2015 at 9:55 AM, Brian Smith <br...@briansmith.org> wrote: > >> IIUC, the reminder is supposed to go away after a few seconds. However, I >> have experienced the case, many times, where the reminder stays on screen >> for the entire video. IIRC, if I restart the browser and replay the same >> video again, then the reminder goes away. >> >> HTH, >> Brian >> >> On Sat, Aug 15, 2015 at 12:17 AM, Jared Wein <j...@mozilla.com> wrote: >> >> > Including dev-media and dev-security. >> > >> > On Fri, Aug 14, 2015 at 11:53 PM, Eric Shepherd <esheph...@mozilla.com> >> > wrote: >> > >> > > Chris wrote: >> > > >> > > After quite a while of watching HTML 5 video content in fullscreen, I'm >> > > getting a bit tired of being reminded with a huge banner at the top >> that >> > > yes, I can still hit ESC to exit fullscreen mode. For those like myself >> > > that have gotten tired of seeing this message, could there possibly be >> an >> > > option somewhere (maybe in about:config) that allows the user to turn >> > them >> > > off? It's been years now. What do you think? >> > > >> > > OMG yes please. I know how to get out of full screen mode. Make the >> > > reminders stop! :) >> > > >> > > -- >> > > >> > > Eric Shepherd >> > > Senior Technical Writer >> > > Mozilla <https://www.mozilla.org/> >> > > Blog: http://www.bitstampede.com/ >> > > Twitter: http://twitter.com/sheppy >> > > Check my Availability <https://freebusy.io/esheph...@mozilla.com> >> > > >> > > _______________________________________________ >> > > firefox-dev mailing list >> > > firefox-...@mozilla.org >> > > https://mail.mozilla.org/listinfo/firefox-dev >> > > >> > > >> > _______________________________________________ >> > dev-security mailing list >> > dev-secur...@lists.mozilla.org >> > https://lists.mozilla.org/listinfo/dev-security >> > >> >> >> >> -- >> https://briansmith.org/ >> _______________________________________________ >> dev-security mailing list >> dev-secur...@lists.mozilla.org >> https://lists.mozilla.org/listinfo/dev-security >> > _______________________________________________ > dev-media mailing list > dev-media@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-media _______________________________________________ dev-media mailing list dev-media@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-media