<s>
Messaging	B-Application
Layer	I-Application
Security	I-Application
(	O
MLS	O
)	O
,	O
is	O
a	O
security	O
layer	O
for	O
end-to-end	O
encrypting	O
messages	O
in	O
arbitrarily	O
sized	O
groups	O
.	O
</s>
<s>
The	O
idea	O
was	O
born	O
in	O
2016	O
and	O
first	O
discussed	O
in	O
an	O
unofficial	O
meeting	O
during	O
IETF	O
96	O
in	O
Berlin	O
with	O
attendees	O
from	O
Wire	B-Application
,	O
Mozilla	B-Operating_System
and	O
Cisco	O
.	O
</s>
<s>
The	O
founding	O
members	O
are	O
Mozilla	B-Operating_System
,	O
Facebook	B-Application
,	O
Wire	B-Application
,	O
Google	B-Application
,	O
Twitter	B-Application
,	O
University	O
of	O
Oxford	O
,	O
and	O
INRIA	O
.	O
</s>
<s>
As	O
of	O
March	O
29	O
,	O
2023	O
,	O
the	O
IETF	O
has	O
approved	O
publication	O
of	O
Messaging	B-Application
Layer	I-Application
Security	I-Application
(	O
MLS	O
)	O
as	O
a	O
new	O
standard	O
.	O
</s>
