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SIUC Information
Security Scam/Spam Advice
Phishing
Scams
"Phishing"
email is the type that tries to convince you that you need to respond
(either by email or by going to a website.) This type of
email
wants information from you. The information can be
any identifying information, credit card information,
usernames,
or passwords (including SIUC or other webmail passwords.)
This type of email is of great concern, and any help we can
receive from the SIUC community to keep people from falling for these
types
of scams would be appreciated (see below)
There is
always some risk involved in opening phishing scam and other
spam messages.
Some messages have been known to attempt to exploit whoever opens them.
In order to attempt to reduce the risk of this possibility, We
recommend not viewing the message and using the following technique to
report phishing scams.
What
can I do about Phishing Scams?
The
first thing you want to do when you receive a suspect email (without
opening it) is to
change
your view of the messages to "simple text mode" or "plain text mode"
(each email client will have its own naming convention.) This
way, even if you accidentally "launch" the message, you have restricted
the type of attack vectors that can potentially be used against you if
the email is designed to exploit a vulnerability or to infect your
machine.
Next, you'll want to change your preferences to
allow viewing of the full message header information. MIT has
a
good page on enabling full headers that covers many email clients:
http://web.mit.edu/stopit/fullheaders.html
Then
you want to turn off the "message pane" or "preview pane" (again
various email clients use differing nomenclatures.) Once you have done
all of those things, you should still be able to "right click" on the
message and choose something like "forward"
or "forward as attachment"
to be able to send it on to whom ever you are reporting it
to. On
campus, we recommend reporting phishing scams (banking, credit union,
financially or account motivated themes) to: PIRT@castlecops.com
and CC: scam@siu.edu
and postmaster@siu.edu.
In
many cases phishing or other scam messages arrive as a normal email
that simply tries to scare or entice you and then provides a link for
you to open with your web browser where the real damage is
done,
either via ActiveX, javascript, plug-in based attacks or by convincing
the user to submit their personal details to the phishing site.
If
you receive an email that asks you to "verify" any identifying
information, credit card information, usernames, or passwords
(including SIUC or other webmail passwords) and that email is not in
response to an action you have recently taken (such as signing up for a
website where they require you to verify your email address before you
can login)
*DO NOT* respond to
the email.
You
should never respond to these types of messages. Any
reputable
source would either contact you directly, or simply block your access
to your account (forcing you to call in and speak with them, if they
were unable to get in touch with you.) If the email
is supposedly from a trusted source (such as your bank or
credit
card company) contact that source directly, via telephone because it is
very improbable that they would use an insecure method (such as email)
to contact you about "your account."
Regular
"Annoying" Spam
As
mentioned above, there is always some risk involved in opening spam and
phishing scam
messages. Spam messages have been known to attempt to exploit whoever
opens them. In order to attempt to reduce the risk of this possibility,
we recommend not viewing the message, or viewing only in "plain text"
mode. Never
respond to the spam message!
Even
replying to an "opt-out" causes harm, because this confirms for the
spammer that your email address is active and that is being checked.
Replying can also provide the spammer with details
about
the email program that you are using, which may cause you to receive
"targeted" spam messages that will attempt to exploit any weaknesses in
your email client (to infect your machine with malware.)
Unfortunately,
there is not a lot that can be done about the regular annoying spam.
If you are sure that a message is spam, Delete it
(without opening it.) If you are unsure about a message,
change
the email client so that you are viewing the message in "plain text"
mode and then verify that it is spam prior to deleting it.. Regular spam does not
need to be reported.
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