<s>
MacKeeper	B-Operating_System
is	O
anti-malware/utility	O
computer	O
software	O
for	O
macOS	B-Application
.	O
</s>
<s>
MacKeeper	B-Operating_System
was	O
developed	O
by	O
ZeoBIT	O
,	O
later	O
acquired	O
by	O
Kromtech	O
,	O
and	O
is	O
currently	O
owned	O
by	O
Clario	O
Tech	O
.	O
</s>
<s>
MacKeeper	B-Operating_System
has	O
a	O
troubled	O
and	O
litigious	O
history	O
.	O
</s>
<s>
Zeobit	O
settled	O
a	O
class	O
action	O
lawsuit	O
accusing	O
them	O
of	O
deceptive	O
advertising	O
and	O
making	O
false	O
claims	O
about	O
MacKeeper	B-Operating_System
's	O
capabilities	O
,	O
and	O
Kromtech	O
unsuccessfully	O
sued	O
MacKeeper	B-Operating_System
critics	O
.	O
</s>
<s>
Some	O
versions	O
are	O
difficult	O
to	O
uninstall	O
,	O
and	O
some	O
versions	O
have	O
been	O
flagged	O
as	O
undesirable	O
by	O
other	O
anti-virus	B-Application
programs	I-Application
.	O
</s>
<s>
MacKeeper	B-Operating_System
was	O
first	O
released	O
in	O
2010	O
by	O
Zeobit	O
.	O
</s>
<s>
A	O
2011	O
press	O
release	O
by	O
Avira	O
and	O
ZeoBIT	O
revealed	O
that	O
MacKeeper	B-Operating_System
integrated	O
Avira	O
's	O
antivirus	B-Application
scanning	O
engine	O
.	O
</s>
<s>
In	O
April	O
2013	O
,	O
MacKeeper	B-Operating_System
was	O
acquired	O
by	O
Kromtech	O
.	O
</s>
<s>
In	O
December	O
2015	O
,	O
security	O
researcher	O
Chris	O
Vickery	O
found	O
that	O
MacKeeper	B-Operating_System
customer	O
data	O
was	O
unsecured	O
and	O
publicly	O
accessible	O
on	O
the	O
internet	O
,	O
exposing	O
the	O
emails	O
,	O
phone	O
numbers	O
,	O
and	O
other	O
information	O
of	O
over	O
13	O
million	O
MacKeeper	B-Operating_System
users	O
;	O
Kromtech	O
rapidly	O
secured	O
the	O
customer	O
database	O
.	O
</s>
<s>
In	O
2019	O
,	O
a	O
newly-founded	O
company	O
,	O
Clario	O
Tech	O
,	O
acquired	O
Kromtech	O
and	O
MacKeeper	B-Operating_System
.	O
</s>
<s>
Many	O
antivirus	B-Application
programs	I-Application
classified	O
MacKeeper	B-Operating_System
version	O
3	O
as	O
a	O
potentially	B-Application
unwanted	I-Application
program	I-Application
or	O
adware	O
and	O
prompted	O
users	O
to	O
remove	O
it	O
.	O
</s>
<s>
Some	O
versions	O
of	O
MacKeeper	B-Operating_System
opened	O
a	O
critical	O
security	O
hole	O
in	O
customers	O
 '	O
Macs	O
;	O
Kromtech	O
later	O
issued	O
a	O
fix	O
.	O
</s>
<s>
AV-Comparatives	O
found	O
that	O
MacKeeper	B-Operating_System
warned	O
of	O
"	O
serious	O
"	O
issues	O
on	O
a	O
brand-new	O
clean	O
copy	O
of	O
macOS	B-Application
,	O
which	O
could	O
only	O
be	O
fixed	O
by	O
purchasing	O
the	O
program	O
.	O
</s>
<s>
French	O
news	O
outlet	O
Le	O
Figaro	O
called	O
MacKeeper	B-Operating_System
a	O
scam	O
,	O
and	O
criticized	O
its	O
reliance	O
on	O
"	O
fear	O
"	O
.	O
</s>
<s>
Computerworld	O
described	O
MacKeeper	B-Operating_System
as	O
"	O
a	O
virulent	O
piece	O
of	O
software	O
"	O
.	O
</s>
<s>
MacKeeper	B-Operating_System
's	O
marketing	O
tactics	O
drew	O
criticism	O
.	O
</s>
<s>
In	O
2015	O
,	O
PCWorld	O
noted	O
that	O
MacKeeper	B-Operating_System
ads	O
were	O
"	O
all	O
over	O
the	O
web	O
"	O
,	O
and	O
that	O
Kromtech	O
claimed	O
to	O
be	O
buying	O
60	O
million	O
ad	O
impressions	O
a	O
month	O
.	O
</s>
<s>
MacKeeper	B-Operating_System
was	O
in	O
part	O
promoted	O
by	O
affiliate	O
sellers	O
,	O
who	O
could	O
earn	O
a	O
50%	O
commission	O
for	O
sales	O
of	O
the	O
app	O
.	O
</s>
<s>
Some	O
affiliates	O
promoted	O
MacKeeper	B-Operating_System
in	O
adware	O
.	O
</s>
<s>
MacKeeper	B-Operating_System
's	O
usefulness	O
was	O
disputed	O
by	O
tech	O
media	O
;	O
anti-malware	B-Application
,	O
secure	O
erase	O
,	O
backup	O
,	O
encryption	O
,	O
and	O
anti-theft	O
were	O
either	O
built-into	O
macOS	B-Application
or	O
available	O
for	O
free	O
.	O
</s>
<s>
Top	O
Ten	O
Reviews	O
noted	O
that	O
other	O
Mac	O
anti-malware	B-Application
apps	O
had	O
better	O
detection	O
rates	O
,	O
resulting	O
in	O
a	O
score	O
of	O
7.5	O
out	O
of	O
10	O
.	O
</s>
<s>
A	O
July	O
2017	O
AV-TEST	O
assessment	O
found	O
MacKeeper	B-Operating_System
only	O
detected	O
85.9	O
percent	O
of	O
the	O
tested	O
malware	O
.	O
</s>
<s>
The	O
lawsuit	O
alleged	O
that	O
"	O
neither	O
the	O
free	O
trial	O
nor	O
the	O
full	O
registered	O
versions	O
of	O
MacKeeper	B-Operating_System
performed	O
any	O
credible	O
diagnostic	O
testing	O
"	O
and	O
reported	O
that	O
a	O
consumer	O
's	O
Mac	O
was	O
in	O
need	O
of	O
repair	O
and	O
was	O
at-risk	O
due	O
to	O
harmful	O
error	O
.	O
</s>
<s>
In	O
May	O
2014	O
a	O
lawsuit	O
was	O
filed	O
against	O
Zeobit	O
in	O
Pennsylvania	O
,	O
alleging	O
that	O
MacKeeper	B-Operating_System
fakes	O
security	O
problems	O
to	O
deceive	O
victims	O
into	O
paying	O
for	O
unneeded	O
fixes	O
.	O
</s>
<s>
Customers	O
who	O
bought	O
MacKeeper	B-Operating_System
before	O
8	O
July	O
2015	O
could	O
apply	O
to	O
get	O
a	O
refund	O
.	O
</s>
<s>
Kromtech	O
also	O
filed	O
at	O
least	O
two	O
unsuccessful	O
defamation	O
lawsuits	O
against	O
MacKeeper	B-Operating_System
critics	O
.	O
</s>
<s>
In	O
2014	O
,	O
Kromtech	O
sued	O
David	O
A	O
.	O
Cox	O
,	O
who	O
had	O
made	O
a	O
video	O
criticizing	O
MacKeeper	B-Operating_System
;	O
the	O
judge	O
dismissed	O
the	O
case	O
.	O
</s>
<s>
In	O
2019	O
,	O
MacKeeper	B-Operating_System
was	O
acquired	O
by	O
a	O
newly-founded	O
company	O
,	O
Clario	O
Tech	O
.	O
</s>
<s>
In	O
November	O
2020	O
,	O
Clario	O
released	O
MacKeeper	B-Operating_System
5	O
,	O
which	O
received	O
3.5	O
of	O
5	O
start	O
reviews	O
from	O
TechRadar	O
and	O
Macworld	O
.	O
</s>
