My
name
is
and
I
work
here
at
-
in
.
And
this
here
is
Brain
.
,
the
first
PC
virus
in
history
.
Written
in
,
it's
now
25
years
old
.
This
here
is
a
picture
of
me
,
almost
25
years
ago
,
analysing
Brain
.
And
I
remember
being
fascinated
about
the
virus
and
about
how
it
worked
,
and
about
where
it
came
from
.
And
we
actually
know
where
Brain
comes
from
,
because
inside
the
code
of
the
Brain
virus
there's
an
address
.
So
we
know
it's
coming
from
,
and
we
know
it's
written
by
two
brothers
,
and
.
And
now
we're
going
to
go
and
find
them
.
You've
gone
a
long
way
.
We're
taking
you
back
home
.
This
is
the
way
viruses
used
to
travel
,
with
people
travelling
around
the
world
carrying
with
them
.
The
disks
infected
with
viruses
like
Brain
.
And
of
course
today
,
all
the
viruses
spread
over
the
internet
.
It
feels
quite
amazing
to
be
here
after
all
these
years
and
to
actually
meet
you
.
And
we've
collected
lots
of
questions
from
people
reading
our
blog
,
or
on
Reddit
,
or
from
Twitter
.
Questions
people
wanted
to
ask
from
you
.
So
first
question
,
who
wrote
Brain
?
Mr
Basit
and
me
,
we
together
,
we
finally
concluded
the
final
version
of
the
virus
.
But
the
idea
was
floated
way
back
in
84
,
with
the
help
of
a
few
other
friends
and
my
customers
even
,
you
know
.
Now
many
sources
,
including
Wikipedia
,
list
that
Brain
was
found
in
January
1986
.
But
what
is
the
real
date
?
When
exactly
did
you
write
it
?
The
most
spread
out
version
was
finalised
in
somewhere
.
Another
question
,
why
did
you
write
Brain
?
We
were
experimenting
a
few
things
.
One
thing
that
in
DOS
we
can
have
something
multi
-
tasking
kind
of
thing
,
and
the
second
thing
to
explore
the
security
holes
of
the
operating
system
in
the
comparison
or
in
the
contrast
of
Unix
or
Xenix
,
the
de
facto
operating
system
of
the
time
that
time
.