<s>
SwissCovid	B-Application
is	O
a	O
COVID-19	B-Application
contact	I-Application
tracing	I-Application
app	I-Application
used	O
for	O
digital	B-Protocol
contact	I-Protocol
tracing	I-Protocol
in	O
Switzerland	O
.	O
</s>
<s>
Use	O
of	O
the	O
app	O
is	O
voluntary	O
and	O
based	O
on	O
a	O
decentralized	O
approach	O
using	O
Bluetooth	B-General_Concept
Low	I-General_Concept
Energy	I-General_Concept
and	O
Decentralized	B-Protocol
Privacy-Preserving	I-Protocol
Proximity	I-Protocol
Tracing	I-Protocol
(	O
dp3t	O
)	O
.	O
</s>
<s>
However	O
,	O
there	O
is	O
no	O
legal	O
basis	O
for	O
the	O
SwissCovid	B-Application
application	O
to	O
be	O
part	O
of	O
this	O
portal	O
even	O
though	O
technically	O
speaking	O
it	O
is	O
ready	O
,	O
according	O
to	O
Sang-Ill	O
Kim	O
,	O
head	O
of	O
the	O
digital	O
transformation	O
department	O
of	O
the	O
Federal	O
Office	O
of	O
Public	O
Health	O
.	O
</s>
<s>
In	O
June	O
2020	O
,	O
researchers	O
Serge	O
Vaudenay	O
and	O
Martin	O
Vuagnoux	O
published	O
a	O
critical	O
analysis	O
of	O
the	O
application	O
,	O
noting	O
that	O
it	O
relies	O
heavily	O
on	O
Google	B-Application
and	I-Application
Apple	I-Application
's	I-Application
exposure	I-Application
notification	I-Application
system	O
,	O
which	O
is	O
integrated	O
into	O
their	O
respective	O
Android	O
and	O
iOS	O
operating	O
systems	O
.	O
</s>
<s>
Paul-Olivier	O
Dehaye	O
of	O
Personaldata.io	O
and	O
professor	O
Joel	O
Reardon	O
of	O
the	O
University	O
of	O
Calgary	O
published	O
in	O
June	O
2020	O
several	O
examples	O
of	O
AEM	O
(	O
Associated	O
Encrypted	O
Metadata	O
)	O
replay	O
and	O
manipulation	O
attacks	O
via	O
software	B-Application
development	I-Application
kits	I-Application
(	O
SDKs	O
)	O
found	O
in	O
benign	O
third-party	O
mobile	O
applications	O
downloaded	O
by	O
the	O
general	O
public	O
and	O
having	O
the	O
phone	O
's	O
Bluetooth	O
access	O
permissions	O
and	O
in	O
September	O
2020	O
a	O
paper	O
indicating	O
that	O
"	O
Bluetooth-based	O
proximity	O
tracing	O
apps	O
are	O
fundamentally	O
insecure	O
with	O
respect	O
to	O
an	O
attacker	O
leveraging	O
a	O
malevolent	O
app	O
or	O
SDK	O
"	O
.	O
</s>
