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MAIL
PROTECTION
E-mail threats:
All e-mail threats require human interaction to implement
(usually the owner of the e-mail account).
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Spam
Spam is unsolicited, bulk e-mail. They are usually
trying to sell you something.
Spammers often use tricks to get you to open their
e-mails such as making the message appear that it's from
someone you know. If you click on the links in a Spam
message, or reply to the spammer, this tells them
that your email address is valid. Now they will send you
even more spam and might even sell your email
address to other spammers. They sometimes get you by
stating to respond to this email to be removed from
their mailing list. Some spam e-mails also embed Spyware
or viruses. Opening these could lead to data loss,
system problems, or even identity theft.
As a precaution, users
should delete messages from unknown sources without
opening them. If you happen to open the message to
check its legitimacy, be sure not to click on any of the
links within the message and never open any
attachments. Doing so may cause some serious problems.
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Viruses
Viruses are programs designed to replicate and implant
themselves into files, programs, or your
computers' operating system. They can have effects from
slowing your computer down to erasing files causing
your system to permanently crash. Viruses can be sent in
pictures, programs, Web Pages, and documents.
As a precaution, be sure
you have an up to date Anti-Virus program installed and
working on your computer.
McAfee Anti-virus is
available for FREE to
PUC Faculty, Staff, and Students.
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Worms
A worm is a computer program that has the ability to
copy itself from one computer to another through
computer networks. Worms use up computer time and
network bandwidth when they replicate. They can
cause a network to slow to a crawl or even stop
functioning altogether.
The best way to prevent your computer from getting worms
is to have an up to date Anti-Virus program installed
and working on your computer.
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Phishing
The most common form for Phishing scams is a form of
spam. The intent is not to sell you something but
rather to trick you into revealing your personal
information which can lead to identity theft. E-mails
often look like legitimate e-mails from the actual
companies such as PayPal, Chase, Citibank, etc,
but they are not. They often tell you that you must
click on the link within the email to respond or
your account will be in jeopardy of something.
When you click on a link in one of these messages, you
are taken to a fake website that mimics the legitimate
one. The look very real right down to the company
logo. They often prompt you to fill in your personal
information and/or account information for
verification. If you believe you are on the legitimate
site, you might be fooled into providing this
information. However, doing so will give them exactly
what they need to use your account for purchases, or
even get a passport or drivers license with your name on
it.
Always take caution even if you believe the email
message. For example, let's say you receive an email
stating your Paypal account has been used for
unauthorized purchase. This was a fairly common phishing
scam about a year ago. However, you may be concerned
and want to verify that your Paypal account is fine.
Never click on the link embedded in the email. Rather,
access the company website by typing in the URL you
are familiar with. If you're unsure, look for the
website address in written communication such as account
statements.
If you are ever about to type in your personal
information on a website, be absolutely sure it's the
official website. If you are unsure, simply do not
give out your personal information.
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Bulk/junk e-mail
It is estimated that over 70% of ALL e-mails sent are
bulk and/or junk e-mails, most of them Spam. This
creates problems when it comes time to read the mails in
your inbox...
Massive amounts of e-mails can bog down a system, as
each one require network resources to get from the
sender to the recipient.
This, in turn, causes the network to slow down.
Further, massive amounts of e-mail may make it
harder to spot a genuine e-mail threat, or it may cause
you to delete important items (e-mails or files on your
computer).
A good Spam filter is essential in combatting this
overload of e-mail if you are on the receiving end. Find
one that allows filtering in the subject and body of
e-mails, as well as filtering by e-mail address and/or
domain.
If you routinely send large quantities of e-mail to
people, please be aware that the people you are sending
to may at some point suffer from "inbox overload" (too
much mail in their inbox for them to deal with) from
time to time. If it is not your intention to
cause this, please be considerate and, from time to
time, refrain from sending e-mails to them on occasion.
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General mail
usage
These are tips that will help you to
secure your e-mail accounts, and alert you if something is
wrong.
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Spare e-mail accounts
- Having more than one or two e-mail accounts allow you
to control who you receive information from, and allows
you more control over your "main" accounts. |
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Sending messages -
Be careful when sending messages so as not to be
classified as Spam or bulk e-mail. |
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Sending attachments
- Be careful when sending attachments:
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Enable outgoing
virus scanning if your anti-virus program has
it.
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Do NOT send
attachments with the attachments that are
normally or could be associated with viruses.
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