<s>
While	O
some	O
viruses	O
did	O
exist	O
for	O
Palm	B-Operating_System
OS	I-Operating_System
based	O
devices	O
,	O
very	O
few	O
were	O
ever	O
designed	O
.	O
</s>
<s>
For	O
more	O
information	O
,	O
see	O
Deletes	O
applications	O
and	O
files	O
August	O
28	O
,	O
2000	O
PEMagic	O
Erases	O
device	O
ROM	B-Device
Unknown	O
PhageVirus	O
that	O
infects	O
handheld	O
devices	O
that	O
run	O
Palm	B-Operating_System
OS	I-Operating_System
.	O
</s>
