<s>
NiceHash	B-Application
is	O
a	O
global	O
cryptocurrency	O
hash	B-Algorithm
power	I-Algorithm
broker	O
and	O
cryptocurrency	O
exchange	O
with	O
an	O
open	O
marketplace	O
that	O
connects	O
sellers	O
of	O
hashing	O
power	O
(	O
cryptominers	O
)	O
with	O
buyers	O
of	O
hashing	O
power	O
using	O
the	O
sharing	O
economy	O
approach	O
.	O
</s>
<s>
NiceHash	B-Application
users	O
are	O
primarily	O
video	O
gamers	O
who	O
have	O
powerful	O
graphics	O
cards	O
(	O
GPUs	B-Architecture
)	O
suited	O
to	O
cryptocurrency	O
mining	O
.	O
</s>
<s>
NiceHash	B-Application
was	O
founded	O
in	O
2014	O
,	O
a	O
former	O
medical	O
student	O
turned	O
computer	B-Application
programmer	I-Application
,	O
and	O
Marko	O
Kobal	O
.	O
</s>
<s>
NiceHash	B-Application
's	O
original	O
founder	O
Matjaž	O
Škorjanc	O
was	O
allegedly	O
one	O
of	O
the	O
creators	O
of	O
malware	O
called	O
Mariposa	O
botnet	O
and	O
served	O
four	O
years	O
and	O
ten	O
months	O
in	O
a	O
Slovenian	O
prison	O
.	O
</s>
<s>
On	O
December	O
6	O
,	O
2017	O
,	O
approximately	O
4,700	O
Bitcoins	B-Protocol
(	O
US$64	O
million	O
at	O
the	O
time	O
of	O
the	O
hack	O
)	O
were	O
stolen	O
from	O
NiceHash	B-Application
allegedly	O
by	O
a	O
spear	O
phishing	O
attack	O
.	O
</s>
<s>
Due	O
to	O
the	O
open	O
and	O
transparent	O
nature	O
of	O
the	O
blockchain	B-Application
,	O
the	O
security	O
breach	O
received	O
an	O
influx	O
of	O
attention	O
as	O
the	O
stolen	O
sum	O
and	O
movement	O
of	O
bitcoins	B-Protocol
were	O
visible	O
to	O
anyone	O
on	O
the	O
internet	O
.	O
</s>
<s>
On	O
December	O
21	O
,	O
2017	O
,	O
Marko	O
Kobal	O
resigned	O
as	O
the	O
CEO	O
of	O
NiceHash	B-Application
.	O
</s>
<s>
NiceHash	B-Application
announced	O
that	O
they	O
had	O
hired	O
cyber	O
security	O
and	O
implemented	O
new	O
security	B-General_Concept
protocols	I-General_Concept
after	O
the	O
incident	O
.	O
</s>
<s>
NiceHash	B-Application
reimbursed	O
affected	O
users	O
who	O
made	O
a	O
claim	O
by	O
the	O
deadline	O
of	O
December	O
16	O
,	O
2020	O
,	O
and	O
returned	O
their	O
Bitcoin	B-Protocol
funds	O
in	O
full	O
.	O
</s>
<s>
On	O
February	O
17	O
,	O
2021	O
,	O
a	O
North	O
Korean	O
hacker	O
group	O
(	O
Lazarus	O
)	O
was	O
indicted	O
for	O
the	O
2017	O
NiceHash	B-Application
attack	O
.	O
</s>
<s>
NiceHash	B-Application
opened	O
a	O
cryptocurrency	O
exchange	O
in	O
May	O
2019	O
,	O
where	O
miners	O
and	O
other	O
traders	O
of	O
cryptocurrencies	O
trade	O
their	O
mined	O
coins	O
to	O
other	O
cryptocurrencies	O
or	O
exchange	O
to	O
fiat	O
currency	O
.	O
</s>
<s>
In	O
May	O
2022	O
,	O
NiceHash	B-Application
became	O
the	O
first	O
provider	O
of	O
mining	O
software	O
to	O
unlock	O
Nvidia	O
's	O
LHR	O
(	O
Light	O
Hash	B-Algorithm
Rate	O
)	O
.	O
</s>
<s>
NiceHash	B-Application
provides	O
an	O
open	O
hash	B-Algorithm
power	I-Algorithm
marketplace	O
where	O
buyers	O
can	O
bid	O
to	O
purchase	O
computer	O
power	O
to	O
add	O
to	O
their	O
mining	O
pool	O
or	O
operations	O
.	O
</s>
<s>
In	O
return	O
for	O
providing	O
this	O
service	O
,	O
NiceHash	B-Application
takes	O
a	O
percentage	O
or	O
fee	O
from	O
each	O
group	O
(	O
buyers	O
and	O
sellers	O
)	O
.	O
</s>
<s>
Sellers	O
have	O
to	O
run	O
NiceHash	B-Application
mining	O
software	O
and	O
connect	O
their	O
mining	O
hardware	O
or	O
just	O
regular	O
PCs	O
or	O
graphics	O
cards	O
to	O
NiceHash	B-Application
stratum	O
servers	B-Application
and	O
to	O
the	O
buyer	O
's	O
order	O
.	O
</s>
<s>
For	O
each	O
valid	O
share	O
they	O
submit	O
,	O
they	O
get	O
paid	O
in	O
bitcoin	B-Protocol
for	O
the	O
price	O
that	O
is	O
determined	O
by	O
the	O
current	O
weighted	O
average	O
and	O
refreshed	O
each	O
minute	O
.	O
</s>
<s>
They	O
are	O
renting	O
out	O
the	O
hardware	O
to	O
be	O
used	O
for	O
mining	O
by	O
other	O
people	O
(	O
buyers	O
)	O
in	O
a	O
similar	O
concept	O
to	O
cloud	B-Protocol
mining	I-Protocol
.	O
</s>
<s>
Buyers	O
bid	O
on	O
the	O
open	O
marketplace	O
for	O
hash	B-Algorithm
power	I-Algorithm
on	O
different	O
mining	O
algorithms	O
,	O
and	O
direct	O
it	O
to	O
their	O
mining	O
pool	O
to	O
increase	O
their	O
chances	O
of	O
finding	O
a	O
block	O
reward	O
.	O
</s>
