Another good reason for blocking this for now is that it lets Javascript
circumvent the 5usec granularity of performance.now() and do things like
stealing private keys.

https://www.w3.org/TR/hr-time/#privacy-security
http://iss.oy.ne.ro/SpyInTheSandbox.pdf
https://bugzilla.mozilla.org/show_bug.cgi?id=1252035#c9

We must not turn this on by default in any branch other than Nightly until
we can assure that the 5usec boundary will be maintained.

--Richard


On Fri, Jan 15, 2016 at 12:10 AM, Lars Hansen <lhan...@mozilla.com> wrote:

> It's not enabled by default because the API is probably not fully baked
> yet; until the spec reaches Stage 3 at TC39 we should expect things to be
> fluid.  I don't expect that milestone to be reached until this summer.
>
> We've discussed enabling by default on Aurora, DevEd, and Beta once we
> reach Stage 2 at TC39, but I don't own that decision, can't guarantee it,
> and might even argue that it would be better to wait a couple of months
> after reaching Stage 2, which is when the spec gets serious attention from
> the committee.
>
> Google has what I understand to be a compatible implementation of the
> current spec, also available behind a pref (actually behind two of them
> last I heard).
>
> --lars
>
>
> On Thu, Jan 14, 2016 at 10:24 PM, Robert O'Callahan <rob...@ocallahan.org>
> wrote:
>
> > Sounds good to me too. What's blocking us from enabling by default?
> >
> > Rob
> > --
> > lbir ye,ea yer.tnietoehr  rdn rdsme,anea lurpr  edna e hnysnenh hhe
> uresyf
> > toD
> > selthor  stor  edna  siewaoeodm  or v sstvr  esBa  kbvted,t
> > rdsme,aoreseoouoto
> > o l euetiuruewFa  kbn e hnystoivateweh uresyf tulsa rehr  rdm  or rnea
> > lurpr
> > .a war hsrer holsa rodvted,t  nenh hneireseoouot.tniesiewaoeivatewt sstvr
> > esn
> >
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