All About Spam
Large numbers of unsolicited, unwanted, intrusive, irrelevant
or inappropriate commercial messages sent via email or instant
messenger is called spam.
Spam is basically the same message sent repeatedly to a user.
Generally, spam on the Internet is used for commercial
advertising. It is a cheap but unreliable way to reach
consumers. Spam advertisers incur no real costs to send out
emails to users, beyond accessing, managing and updating email
lists. It is also very difficult to hold spammers accountable
for their mass mailings.
Most spam on the Internet advertises prescription drugs,
dubious services and products (e.g. penis enhancement), legal
services, pornography, unlicensed computer software,
get-rich-quick schemes, dubious educational courses, etc.
Spam is widely hated by the Internet community. Several
countries have introduced legislation to combat the increasing
volume of spam.
Why is spam a problem?
Spam is a major nuisance for Internet users. The moment a
user’s email id is located by a spammer, the user is vulnerable
to spam. It is estimated that as many as 6 out of 10 emails
arriving into an inbox are spam. It is a major nuisance for
users to constantly have to clean out their mailboxes.
Furthermore, the large volumes of spam traffic across the
Internet consume large quantities of bandwidth. A large amount
of spam arriving at one destination is also likely to crash the
system and result in the loss of legitimate messages, causing a
major inconvenience to users. This is called ‘denial of
service’.
Types of spam
Email spam
Email spammers send hundreds of nearly identical messages to a
particular email address.
Email addresses are usually obtained from databases, random
email generators, web pages, recipients from Usenet postings,
and by sheer guesswork. Email spammers often use fraudulent
methods to disguise their identity – false names and accounts,
false credit card information, constant switching of email
addresses, etc. Most email spammers conceal the origin of their
messages by spoofing email addresses or even spoofing IP
addresses. The spammer can thus make the message appear from
almost any email address.
Spammers often use virus-infected networks and computers to
send their spam. After gaining access to the system, the
spammer loads a Trojan virus or a Bot on the system, which
automatically generates and sends spam to everybody on the
user’s address book.
The amount of email spam is estimated at 55 billion per day, as
of June 2006.
How to protect your computer from email spam:
• Set up email filters on your computer.
• Report spammers to your ISP or your email provider. They can
then block these addresses.
• Give out your email address to only trusted people. If you
need to subscribe to online services with your email address,
create an alternative address for this purpose.
• Install reliable anti-virus and anti-spyware software on your
computer and update them regularly. These will prevent spammers
from hijacking your PC.
• Do a periodic Internet search for your email address, and ask
the specific webmaster to remove it from their web site.
Messaging spam
Messaging spam is a type of spam targeted at instant messaging
(IM) services like MSN Messenger, AIM, ICQ, Yahoo Messenger,
Google Talk, etc. It is also called SPIM.
Messaging spam works through the IM user directories offered by
most messenger services. These directories contain information
like user id’s and demographic information like age and sex.
Spammers can easily gather this information, subscribe to the
service, and send out spam messages.
How to protect yourself from messenger spam:
• Use the privacy option on your messenger service. It will
allow you to receive messages only from people on your contact
list.
• Block senders who send you spam.
To find more out about getting help with your spam problems
check out these companies below.
Cloudmark
McAfee
Spam Bully
Spam Shield
About The Author: The article “Understanding Spam” is brought
to you by Spyspotter anti-spyware program and system defender.
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