Archive for August, 2007

Adware Installation Stealth Tactics

Saturday, August 25th, 2007

When adware can\’t trick you into installing it, it often resorts
to a secretive invasion. Find out how to defend yourself.

Adware Installation Stealth Tactic 1: Expensive Freebie

• How it works: adware may get installed with so-called free
software without any mention of it being included anywhere in
the software\’s license or documentation. Or any mention of the
bundled software is buried deep within a click-wrap licensing
agreement.

• How to protect yourself: It\’s become an endlessly repeated
cliché, but it\’s true: only install software from developers you
trust. That doesn\’t mean you can never try any software from a
new company. Just familiarize yourself with the developer\’s
reputation before opening wide your hard drive. Search the
developer\’s name on search engines. If a dozen anti-spyware
advertisements are listed alongside the search results, that\’s
not a good sign.

• How to fight back: If you\’ve already downloaded the expensive
freebie, it\’s probably too late to simply uninstall it. The
bundled adware will likely stick around on your computer long
after the software that came with it has been sent to the
recycling bin. Instead, you need to use an anti-spyware program,
and preferably two to be sure.

Tactic 2. Adware Drive-by

• How it works: adware may hide in a website\’s code and download
itself automatically onto the site visitor\’s hard drive. This is
often called a \”drive-by\” installation.

• How to protect yourself: drive-by installations of software
tend to happen on obscure commercial websites, rather than
personal homepages, blogs, or the websites of established
businesses. If you can avoid surfing in those kinds of rough
waters, you\’ll be a lot safer from adware attacks.

• How to fight back: If you do suspect that a site has
downloaded software onto your computer, close it immediately and
fire up your anti-spyware and antivirus software. You may also
want to delete your browser\’s cache and also any program
downloads folders and temporary internet folders, just in case
the adware is a new kind of adware that isn\’t in your
anti-spyware software\’s database yet.

Tactic 3: The Old-Fashioned Way: Email

• How it works: you know the drill: just as with viruses, adware
may come as an email attachment. The stealth part is that simply
not opening attachments may not be enough to protect you. The
attachment may not display an attachment icon and is set to
auto-install as soon as the message is opened.

• How to protect yourself: make sure your email software does
not open attached files automatically. With most new email
software applications the option to block automatic downloads of
attached files is set as the default. But to be really safe, you
should set your anti-spyware software to automatically monitor
all email.

• How to fight back: delete the offending email without opening
it or the attachment (assuming that hasn\’t happened already).
Run a full scan of your hard drive using anti-spyware and
antivirus software.

About the author:
Joel Walsh writes for spyware-refuge about spyware and adware
removal:
http://www.spyware-refuge.com?%20spyware%20adware%20remover

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What the hex goin\’ on here?

Friday, August 24th, 2007

When editing an HTML document or graphic image for the Internet,
you may encounter a color code similar to #FFFFFF. You can
easily manipulate a sequence like this with a web palette or
image-editing software. But by examining it more closely, you
can gain valuable insight into the displays generated by
electronic media such as computers and televisions.

In the traditional analysis you\’re probably familiar with, red,
blue, and yellow are considered \”primary\” because no other
colors are used to create them. \”Additive\” colors result from
some combination of these. For example, purple is produced by
mixing red and blue.

Electronic media, on the other hand, work with light, not paint.
The visible spectrum ranges from red (infrared) to green to blue
(ultraviolet). In the same way a prism separates the rainbow of
colors, a computer screen can break down and display the
component parts of white light. In a process known as
subtractive synthesis, a color is created by removing its
complement.

In a six-character color code, the first two figures indicate
the amount of red present, the second two are a measure of
green, and the final two describe a level of blue. These codes
employ a hexadecimal numerical scheme, wherein the letters A
through F account for the final six increments. Looking at the
example offered above, the designation #FFFFFF indicates that
red, green, and blue are all fully present, and therefore white
is displayed. At the other extreme, #000000 denotes black; no
color is exhibited.

For instance #FFFF00 would represent yellow. Notice the red and
the green are at full tilt. There is no blue. By mashing the red
and green up against each other, the red cancels out the blue
and all that is left is the yellow. It\’s actually a subtractive
color method being employed in an additive world.

Another example can be DC143C. This code creates a shade of red
called \”crimson.\” The red setting, DC, is pretty intense.
There\’s not much green. Blue is set a little less than halfway
up. As you can see easily hexadecimal code is just about
adjusting the right hue. Considering the 3 different colors
with, 00 to FF, 256 different hues; we end up with 256-3
different colors which explain our 64 bit representation of
colors.

So the next time you’re in need of riveting conversation, you
can bring up your new knowledge about Hex codes for colors.

About the author:
Ben Gordon currently writes at several web coding/development
forums and lists, including one he co-owns with other members of
a web development team at http://webxpertz.net/forums . He is
presently promoting a new reprint article directory
http://articles.webxpertz.net/content/ to assist webmasters with
the difficult task of finding fresh content for their websites.

The Need for Rackmount Computer Cases

Thursday, August 23rd, 2007

When businesses need to group one type of server in with similar
kinds, rack mount computer cases are brought in. Holding as many
as 40 single servers, they feature common temperature-monitoring
systems, linked drive bays and up to a maximum of 10 air-bearing
fans for optimized cooling. Common power inputs and wiring
capabilities make rack mount computer cases the way to go for
growing businesses.

Many cases will accommodate different types and sizes of servers
as they become available on the marketplace. As such, many
businesses, especially banks, keep a set of servers in one case
that perform debit transactions only. Another case can house the
servers that keep track of electronic transfers and so on. In
this manner, the technicians in charge of the system know where
to look when there’s a problem and still have room to grow if
the system requires it.

Rack mount computer cases also come in a portable version for
those businesses that need to move large amounts of computers
from place to place for presentations and other functions. When
the military moves personnel into a previously uninhabited area
to set up shop, one of the items being delicately brought into
play are banks of rack mounted computers in portable cases.

Designed to protect delicate electronic equipment from damage
during the move, these portable cases can safely house up to 40
individual serves on sliding rack mounts with small shock
absorbers to limit damage from vibration and handling. No army
moves without computers and the only way to move banks and banks
of servers from one place to another is with portable rack mount
computer cases. These portable cases are dustproof, water
resistant and require low maintenance to be used for many years.

Portable rack mount computer cases have become the choice for
anyone moving rack mounted computer servers for mobile
workstation set-ups, communications and electronics equipment,
medical instruments and server banks.

About the author:
Rack Mount
Computers
provides detailed information about rack mount
computers, cases, monitors, and keyboards. Rack Mount Computers
is the sister site of Refurbished Laptops
Web
.