


In 2008 I wrote an article here about False
Pop-Ups warning you that you are infected when
you are not. There have been articles in the
news, in print, in blogs and technical pages
that have been republished and re-tweeted - so
by now everyone knows about the threats, right?
Well, not necessarily. In fact, the ruse is the
same as it was in the past, but the graphics are
much more convincing than they used to be.

Users Still Being Duped
The process has not changed over the years, but the mechanism has been perfected. A pop-up window says you are infected and offers you the chance to have your machine protected. Even those who have seen this kind of thing and want to say no can fall pray. Why? Because the “X” you click on to close that window (like the one on the right) is not a normal window; the entire window is a link to malicious code that will install it’s payload to your system. In many cases that payload also disables or uninstalls existing anti-virus and anti-malware software, thus giving it free reign over your system.
What Kinds of Threats are there?
Viruses and Trojans are still at the top of the list, accounting
for 78% of all threats, according to Microsoft Security Intelligence
Report Volume 8. Included in the other 22% of threats are malware,
spyware, scum ware, and exploits that can be equally effective on a
wide variety of machines and can wreak just as much havoc. There are
worms, root kits and many other infection sources out there, but
most sources of infection still pray on the ‘social’ infection
scenario; they almost always promise you something you want for no
cost or promise to clean your machine at no cost. The old adage
about ‘getting what you pay for’ comes to mind as well as “there is
no free lunch
The
fact is that getting that piece of commercial software, that new
movie or the latest recording by your favorite artist is not going
to be free. Offering something for nothing is just the way to get
the door open. Much like the popular Vampire books and movies, they
can’t come inside your computer until they are invited. Once
invited, either through trickery or on purpose, they are free to
move about and suck the life blood from your system!
What Does Each Malware Group Do?
The easiest way to approach this is to provide a concise definition
for each type of infection:
Worms – unlike a virus which requires human
interaction, can copy themselves automatically. They can even leave
artifacts so that once cleaned they can re-infect a system.
Trojan –the most common type of virus infection in
the United States. Just as their namesake the Trojan Horse, the
Trojan infections hide inside an innocent looking software program
you downloaded or received as an email attachment. Trojans can also
infect a user who visits an infected web page.
Email Scams – the height of social engineering,
most of these now involve advance-fee fraud (often called 419
scams), and are often associated with Nigeria and Gambling web
sites.
Spyware – the name given to stealth software that
installs without your permission and tracks your activities. Such
tracking can follow web movements and keystroke capture, thereby
giving the entity to which the spyware “phones home’” access to your
usernames, passwords, credit card numbers and banking information.
Phishing – another social engineering threat that
dates back to the days of phone calls and getting someone to give
you information of a personal or financial nature over the phone.
Phishing through emails or pop-ups looks legitimate and asks a user
for personal information under the premise that it is required to
“validate” your account or provide you with a refund.
Root Kit – software that gains access to your
computer at a “root” level with access permissions of the system
administrator. Once installed, it can be used to redirect the
resources of your hardware to things like Botnets.
Botnet – a way that, without your knowledge, your
computer can be “recruited” into a remote control criminal network
used for the express purpose of identity theft, extortion, espionage
and sending Spam. One of the most prolific Botnet infections was the
Mariposa Botnet which affected 11 million unique IP addresses
between December 23, 2009 and February 9, 2010 according to Panda
Security.
Scareware – the exploit that tells you your system
is infected when it is not.


What is the Cost to Business and Consumers?
Well, while it is not close to the national debt, the cost is still
astounding. By mid 2010, the estimated cost to U.S. households for
viruses, spyware and phishing combined was $4.55 billion. And just
as with the infections listed above, this number continues to rise.
The cost to businesses is equally disturbing. Based on recent
estimates by the FBI, dealing with viruses, spyware, PC theft and
other computer-related crimes costs U.S. businesses a staggering
$67.2 billion a year!
What can be done?
Read
and pay attention. If you are in the IT department, pass along the
differences between real and fake messages to your company. There
are a lot of malicious programmers out there who would like nothing
better than to add your machine(s) to the pool of those infected
with their arrant code. Make Backups for your data, have a Firewall
active too. Keep watch for “Fake” warnings, keep system updates
applied, use a SPAM blocker, know the difference between Legitimate
and Bogus downloads and if in question, do not download it! Beware
of email bearing attachments and have Anti-Virus Software installed
and keep it updated! Remember, it is only as good as the last update
that was loaded. Watch for information about this and other topics
here and on security web sites. If you have questions or comments
about this article or if there is anything new on the subject,
contact me. I would be happy to respond!
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an MCSE, MCTS, CNE, USE, a member of the Network
Professional Association and the Microsoft
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This page last edited on Tuesday, June 07, 2011