<s>
Peter	O
Gabriel	O
Neumann	O
(	O
born	O
1932	O
)	O
is	O
a	O
computer-science	B-General_Concept
researcher	O
who	O
worked	O
on	O
the	O
Multics	B-Application
operating	I-Application
system	I-Application
in	O
the	O
1960s	O
.	O
</s>
<s>
Before	O
the	O
RISKS	O
mailing	O
list	O
,	O
Neumann	O
was	O
known	O
for	O
the	O
Provably	B-Application
Secure	I-Application
Operating	I-Application
System	I-Application
(	O
PSOS	O
)	O
.	O
</s>
