1. Group: 5
Ya Putheara
Nem Sopheak
Chamroeun Daro
Kheiv Chanthy
Oeurn Sophearith
Lecturer
:
OU PHANNARITH
2. -‐Email
spam,
also
known
as
junk
email
or
unsolicited
bulk
email
(UBE),
is
a
subset
of
electronic
spam
involving
nearly
identical
messages
sent
to
numerous
recipients
by
email
-‐Spam
email
may
also
include
malware
as
scripts
or
other
executable
file
attachments.
3. -‐Email
spam
has
steadily
grown
since
the
early
1990s.
Botnets,
networks
of
virus-‐infected
computers,
are
used
to
send
about
80%
of
spam.
Since
the
expense
of
the
spam
is
borne
mostly
by
the
recipient,
it
is
effectively
postage
due
advertising.
-‐spam
was
declared
to
be
legal
by
the
CAN-‐SPAM
Act
of
2003
provided
the
message
adheres
to
certain
specifications.
4. Spam
has
several
definitions
varying
by
source.
-‐Unsolicited
bulk
email
(UBE)—unsolicited
email
,sent
in
large
quantities.
-‐Unsolicited
commercial
email
(UCE)—this
more
restrictive
definition
is
used
by
regulators
whose
mandate
is
to
regulate
commerce,
such
as
the
U.S.
Federal
Trade
Commission
5. -‐According
to
information
compiled
by
Commtouch
Software
Ltd.,
email
spam
for
the
first
quarter
of
2010
can
be
broken
down
as
follows.
EMail
Spam
by
Topic
6.
7. Appending:
-‐If
a
marketer
has
one
database
containing
names,
addresses,
and
telephone
numbers
of
prospective
customers,
they
can
pay
to
have
their
database
matched
against
an
external
database
containing
email
addresses.
8. -‐Image
spam,
or
Image-‐based
spam
is
an
obfuscating
method
in
which
the
text
of
the
message
is
stored
as
a
GIF
or
JPEG
image
and
displayed
in
the
email.
9. -‐Blank
spam
is
spam
lacking
a
payload
advertisement.
Often
the
message
body
is
missing
altogether,
as
well
as
the
subject
line.
10. -‐Backscatter
is
a
side-‐effect
of
email
spam,
viruses
and
worms,
where
email
servers
receiving
spam
and
other
mail
send
bounce
messages
to
an
innocent
party.
11. -‐Install
spam
filtering/blocking
software.
-‐Do
not
respond
to
suspicious
emails
.
-‐Set
up
a
disposable
email
address
.
-‐Create
an
email
name
that's
tough
to
crack
.
-‐View
emails
in
plain
text
.
-‐Create
a
spam
filter
for
your
email
.
-‐Do
not
post
links
to
email
addresses
on
web
sites
-‐Watch
out
for
those
checked
boxes
-‐Report
spam
