Security Cameras For Your Peace of Mind
The reasons for installing cctv cameras are the same whether you own a home or business. Protecting your property, family and employees is probably at the top of your list of priorities. You're not the only one that feels that way. Sales of home and business security systems have exploded in recent years. Even before 9/11, security system sales were on the rise. After the terrorist attacks, sales of home and business security cameras rose by as much as 20% over the course of three months. The rise in sales of security cameras is justified by the results. Police in most major cities say that the chances of a break-in or robbery are nearly cut in half by the presence of an obvious security camera on the premises. Business owners report that theft by both customers and employees is nearly eliminated when they install the right security camera system. And we've certainly all seen the dramatic footage taken by home security video cameras that have led to the conviction of criminals who have abused children, burglarized homes or otherwise broken the law. What can security cameras do for your peace of mind? Secure Your Business with a Security Camera System You've seen them ? the ubiquitous, all-seeing eyes of a video surveillance system in local stores. The most obvious commercial use for a security camera is to prevent loss of merchandise through shoplifting and theft. It's far from the only way that security cameras are used in business, though. Security cameras can log transactions at the cash register or ATM, monitor remote areas of the plant for safety reasons, monitor the premises after hours and ensure that your employees are treating both you and your customers fairly. Evidence taken from security camera systems has been used as evidence in sexual harassment suits, burglary trials, even murder trials. The evidence isn't always used to convict, either. In one case, the security videotapes from security video camera covering an employee parking lot were used to prove that the car of an employee could NOT have been used in a hit and run accident that took place several blocks away ? they showed the car parked in its usual spot every 2 minutes throughout the entire day. Business owners have installed security cameras at cash registers, overlooking dressing rooms, in parking garages and on loading docks. A security camera in the elevator greatly increases the safety of a building. Security cameras have been used to monitor work progress at construction sites and aid managers in making decisions about unexpected occurrences that may keep a project from completing on time. Protect Your Family with a Home Security Camera System According to police in any major city, the mere presence of a home security camera can reduce the chances that your home will be burglarized by as much as 80%. In addition, security cameras can monitor an infant's room, identify callers at the front door and allow you to view what's going on at home when you're away at the office ? or on a longer trip. Combined with remote monitoring, a security camera in your home can help alert police to a break in at your home, and provide evidence for conviction if one should happen. There are a wide variety of security camera systems to choose from for either home or business. A consultation with a professional security installation company can help you decide which is the right one for your needs. Owen Gerrard has written articles for home and business security for sites such as security cameras and cctv cameras.
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happens out there to others in any business.
Realistically, viewing your threat level has to be considered since everyone
should expect some sort of impending privacy issue no matter how small. Thanks
largely to the Internet you can arm yourself with much of the knowledge and
equipment that the so-called experts use. If a respected agent of computer crimes
for the Secret Service in NYC had his T-Mobile Sidekick hacked, who knows what
else happens out there to others in any business.
We'll start acoustic ducting evaluation is the inspection of air ducts, baseboard
heaters, coffee rooms, lounges, bathrooms or any way the architecture of a building
can transfer sound. A simple example is to put your ear to a wall and listen.
Basically anything that requires the use of the naked ear is called an acoustic
bug. Softer surfaces can help muffle sounds but there are more efficient means out
there. So be aware that the way an office site is designed can act as a conduit for
conversations. Also, be aware of any changes can have adverse affects. Simply
playing music can do wonders for masking conversations.
Inspection of telephone equipment and wiring is called line analysis. This is
trickier than it seems since sometimes a possible weakness has an actual purpose to
the telecommunication system. Especially if it requires constant maintenance and
software upgrades.
All instruments should be opened and inspected. Ideally they should be
compared with a known safe phone or device. If you're not sure, just remove that
piece of loose components and wiring and see if the phone still works. The wiring
can be modified in a switch within the handset that essentially turns it into a
microphone. If you bypass this hook switch, you can listen in from anywhere on the
landline. Technical
equipment won't be able to detect this. Time Domain Reflectometry is the sending
of a pulse down a telephone line. If there is some sort of disruption; a wall outlet or
wiretap; a portion of the pulse will be
sent back to the device called a Time Domain Reflectometer (TDR). Then the time
difference between the reflection and the continuous run is measured. This helps in
determining the distance to the anomaly.
These devices can perform all sorts of diagnostics including mapping a wire
network. That can be useful in locating a hidden phone. Hidden phones have several
obvious uses such as making long distance phone calls to being placed in an office
across the street to receive betting requests by bookies; a practice called back
strapping. If you open up the modular jacks where you connect your phone, you'll
usually see four wires. In most cases only two wires are connected; commonly
known as ring and tip. If you see all four connected, be aware that is not usually
consistent for most wiring situations, especially in homes. The other two wires
could be used for a bugging device.
For instance, the microphone you use in a voice recorder can be cut in half.
Connect the mike head to one set of unused wires anywhere on the phone wire.
Then, so long as there are no breaks in the wire, connect the other end to the jack
that connects to your recorder. Now place your recorder to be VOX (voice) activated
and now you have an extremely reliable bug. By the way, this should be manually
inspected for since using a specialized bug detector may see nothing wrong or
inconsistent. A bug such as this that connects to a wire is called a direct tap.
The other general type is called an inductive tap. This is when an instrument is
outside a wire but can still distinguish what's transacting over a wire. They are
harder to detect since they don't draw power from the line such a standard
telephone would. These are referred to as snuffle bugs. A simple probe used in
hunting wire signals has a speaker, which can display sounds. By
accident one day I was working on an apartment intercom system while using a
probe. I could hear conversations throughout the building quite clearly just
through the intercom boxes mounted on walls from the master unit in the
basement.
If you're using wireless headsets or cordless phones, the radio signals can be
intercepted. A cordless phone acts like a radio, but depending on the frequency and
a few other factors, can make interception extremely difficult. With some
manufacturers, you can buy the same model as your neighbors or the office and
have it join their phone system. Double check Caller ID boxes to see if they also
record numbers dialed besides obviously those being received. If you're using VOIP
(Voice Over IP), remember that calls can be recorded in a fashion identical to
intercepting data between two computers.
These packets of data can reassemble an audio file. Obviously electronic
devices possess semiconductor components such as diodes, resistors and such. The
method to hunt for these components is called Non-Linear Junction Detection
(NLJD). The NLJD unit emits a radio signal while listening for the return signal from
an electronic device. This becomes very useful when a bug is embedded in a picture
frame or wall. The eavesdropping device doesn't have to be active for it to be
discovered. If a device is active and transmitting wirelessly (or even on a wire), you
can detect it with a Radio Frequency Spectrum Analyzer. Depending on the detection
device used, you can determine whether voice, data or video is being sent, and
possibly listen to the data. Try to use different size antennas or buy one that
collapses. Different frequencies can be detected more efficiently by using various
sizes. The use of filters with antennas can also help pinpoint devices on specific
frequencies.
Electronics such as computers, FAX machines and especially CRT monitors can
radiate electromagnetic signals or pulses that can be received by other equipment.
This is known TEMPEST. One way to complicate the surveillance of this is to use
certain fonts and line walls or equipment with different gauges of copper mesh wire.
You can further enhance this posture by using special paints, which block radio
transmissions.
Radio waves will look for a leak or break, so be careful of defensive
applications. One-way window tints can help in blocking signals. Since an
electronic device could generate some heat they can be detected in another way.
The use of a thermal imagery device can detect and actually see minute amounts of
heat radiated for your viewing. You can hide the heat signatures by using creams or
neoprene. Technology exists to collect information from blinking LEDs of modems,
routers, print servers and similar devices. You can only see some general blinking
but with the use of properly tuned optics, filters, oscilloscopes and good timing you
can discern much more. One of the LEDs on your keyboard can be altered to blink
while you are typing in a fashion similar to Morse Code. You can also use a tap in
the keyboard that sends out radio waves again similar to Morse Code and no anti-
virus software will ever be able to find it. Even when a CRT computer monitor is
facing a wall the light can be in a sense read by its flickering emanations from some
distance. A good defensive measure is to buy new LCD flat panel types.
Another approach to attacking FAX machines is to simply record the noises it
makes and play it back to another machine. I used to do this for a client so they
could keep a record of all the faxes they made and received. There are creative and
potentially illegal defenses against wiretappers and Peeping Toms. One is to
transmit an extremely high pitch down the wire, thereby rupturing the listener's
eardrums. I knew someone who once sent a powerful electrical spike down his
phone wire thereby destroying his divorced wife's recorder.
By the way, this leads to another topic-expect the device to be discovered
someday. Don't leave your fingerprints on it. He found it and had it dusted, thereby
producing some prints. My friend used this as leverage against the Private
Investigator that planted it. Advice to Private Investigators, a word to the wise: if you
do this part-time, hire someone who does this full-time. This P.I. lost his license
and almost went to jail. The lawyer who recommended him got into a lot of trouble
as well. He received some unwanted attention from the Feds because of his
telephone dealings went across state lines and also happened to involve the Post
Office.
There is another budding field related to this topic called Protective
Intelligence. Currently there are only a few experts who do this kind of work.
A laser or an infrared beam can be used at a considerable distance from a
target building. Conversational sounds can vibrate unto solid objects such as
windows. The beam's reflection varies in relation to the movement to the window,
which is received and converted back into something audible. To mask the sounds,
you could attach a vibrating device (basically an altered electric razor) to the
window.
Of course if the window is open, then a laser can target another object instead
of the window. A beam of light or laser can be directed to go through a window
onto a solid object thereby nullifying such defensive measures again. Generally you
really can't detect such attacks unless the laser, infrared or light beam is being used
that moment. Certain materials can be used to detect IR emissions, as well as the
use of passive night vision gear. Certain fabrics or even a curtain may actually show
the spot where a beam of light or laser is being focused. Unless the room is dusty or
you have an artificial can smoke, you can follow the beam up to a point and
guesstimate it's location. One type of optical bug is an infrared transmitter. When
placed in the area of interest for transmission of the conversation to an infrared
receiver which will then translate the conversation into an audible format.
Many of these same procedures used can be applied to locating hidden
cameras. A relatively new device uses a series of lasers to seek out optics. This was
originally intended to locate snipers by bodyguards.
I have listed the techniques, counter-measures and then the counter to the
counter-measures to prevent any false sense of security. Usually constant vigilance
is your best weapon besides knowing what to look for. Even if you find a "bug
sweeper" with good credentials, certifications and experience, ask them detailed
questions. Not just to test them but also for your own peace-of-mind. This makes
our job easier and we appreciate greatly when dealing with knowledgeable
customers.
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