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Surveillance

Surveillance is a process of close monitoring of behaviour.

Although the word surveillance literally means (in French) "to watch from above" (i.e. a God's-eye view looking down from on-high) the term is often used for all forms of observation, not just visual observation.

However, the all-seeing eye-in-the-sky is still an icon of surveillance in general.

It is commonly used to describe observation from a distance by means of electronic equipment or other technological means, for example:

• eavesdropping
• telephone tapping
• directional microphones
• communications interception
• covert listening devices or 'bugs'
• Minox subminiature camerass
• pinhole cameras
• closed-circuit television
• electronic tagging
• military reconnaissance
• spy planes, e.g. Lockheed U-2
• satellite photography
• "trusted" computing devices
• Internet and computer surveillance

The term can also be used to describe the monitoring of diseases by epidemiologists.

Table of contents

1 Surveillance, counter-surveillance, inverse surveillance, and sousveillance 2 Impact of surveillance 3 Telephones and mobile telephones 4 Postal services 5 Surveillance devices - 'bugs' 6 Computer Surveillance 7 Photography 8 Closed circuit TV 9 Documentation trails 10 Data profiling 11 Identities 12 Human operatives and social engineering 13 Personal counter-surveillance 14 See also 15 References 16 External links

Surveillance, counter-surveillance, inverse surveillance, and sousveillance

Surveillance is the art of watching over the activities of persons or groups from a position of higher authority. Surveillance may be covert (without their knowledge) or overt (perhaps with frequent reminders such as "we are watching over you"). Surveillance has been an intrinsic part of human history. Sun Tzu's The Art of War, written 2,500 years ago, discusses how spies should be used against a person's enemies. But modern electronic and computer technology have given surveillance a whole new means of operation. Surveillance can be automated using computers, and people leave extensive records that describe their activities.

Counter surveillance is the practice of avoiding surveillance or making it difficult. Before computer networks, counter surveillance involved avoiding agents and communicating secretly. With recent development of the Internet and computer databases counter surveillance has grown. Now counter surveillance involves everything from knowing how to delete a file on a computer to avoiding becoming the target of direct advertising agencies.

Inverse surveillance is the practice of reversalism on surveillance, e.g. citizens photographing police, shoppers photographing shopkeepers, and passengers photographing cab drivers who usually have surveillance cameras in their cabs. A well-known example is George Haliday's recording of the Rodney King beating. Inverse surveillance attempts to subvert the Panoptic gaze of surveillance, and often attempts to subvert the secrecy of surveillance through making the inverse surveillance recordings widely available (in contrast to the usually secret surveillance tapes).

Sousveillance (French for "to watch from below") further includes the recording of an activity by a participant in the activity, in addition to inverse surveillance. Recent sousveillance workshops such as Microsoft's Continuous Archival and Recording of Personal Experience are evidence of a growing sousveillance industry including Microsoft (wearable cameras), Nokia, Hewlett Packard ("Casual Capture") and many others.

Impact of surveillance

The greatest impact of computer-enabled surveillance is the numbers of organisations involved in surveillance operations:

• The state and security services still have the most powerful surveillance systems, because they are enabled under the law. But today levels of state surveillance have increased, and using computers they are now able to draw together many different information sources to produce profiles of persons or groups in society.

• Many large corporations now use various form of 'passive' surveillance. This is primarily a means of monitoring the activities of staff and for controlling public relations. But some large corporations actively use various forms of surveillance to monitor the activities of activists and campaign groups who may impact their operations.

• Many companies trade in information lawfully, buying and selling it from other companies or local government agencies who collect it. This data is usually bought by companies who wish to use it for marketing or advertising purposes.

• Personal information is obtained by many small groups and individuals. Some of this is for harmless purposes, but increasingly sensitive personal information is being obtained for criminal purposes, such as credit card and other types of fraud.

Modern surveillance cannot be totally avoided. If the state uses all of their resources to investigate your activities, they will be able to do so. However, non-state groups may employ surveillance techniques against your organisation, and some precautions can reduce their success. States are also limited in how extensively they can conduct general surveillance of people they have no particular reason to suspect.

Note: In all the forms of surveillance mentioned below, the issue of patterns is important. Although in isolation a single piece of communications data seems useless, when collected together with the communications data of other people it can disclose a lot of information about organisational relationships, work patterns, contacts and personal habits. The collection and processing of communications data is largely automated using computers. See also: traffic analysis

Telephones and mobile telephones

The official and unofficial tapping of telephone lines is widespread.

The contracts or licenses by which the state controls telephone companies means that they must provide access for tapping lines to the security services and the police.

For mobile phones the major threat is the collection of communications data. This data not only includes information about the time and duration of the call, but also the geographical location where the call was made from and to whom. This data can be determined generally because the geographic communications cell that the call was made in is stored with the details of the call. But it is also possible to get greater resolution of a persons location by combining information from a number of cells surrounding the persons location.

Mobile phones are, in surveillance terms, a major liability. This liability will only increase as the new third-generation (3G) phones are introduced. This is because the base stations will be located closer together.

See the article telephone tapping for more details.

Postal services

As more people use faxes and email the significance of the postal system is decreasing (this may not be the case in all countries, certainly the case with international communications, but probably not local). But interception of post is still very important to the security services.

There is no easy way to know your post is being read. The machines used to sort and stamp letters often rip up items anyway, so damage is no certain indicator that your post is being read.

The simplest counter-measure to stop your post being opened is to put sticky tape along each edge and the seams of the envelope, and then sign the tape with an indelible marker. That prevents all but the most expert tampering.

People used to send floppy disks via the post. Today these files can go easily by email. But [[Compact disc|CD]s and DVDs of data are still regularly sent by post. To ensure that this data is not open to reading by anyone, even if its just wrongly delivered, you should encrypt the data.

Surveillance devices - 'bugs'

Surveillance devices or 'bugs' are not really a communications medium, but they are a device that requires a communications channel. The idea of a 'bug' usually involves a radio transmitter, but there are many other options for carrying a signal; you can send radio frequencies through the main wiring of a building and pick them up outside, you can pick up the transmissions from a cordless phones, and you can pick up the data from poorly configured wireless computer networks or tune in to the radio emissions of a computer monitor.

Bugs come in all shapes and sizes. The original purpose of bugs was to relay sound. Today the miniaturisation of electronics has progressed so far then even TV pictures can be broadcast via bugs that incorporate miniature video cameras (something made popular recently during TV coverage sports events, etc.). The cost of these devices has dramatically fallen.

See the article on bugging for more details.

Computer Surveillance

At the very basic level, computers are a surveillance target because you confide your secrets into them. Anyone who can and access or remove your computer can retrieve your information. If someone is able to install software on your system they can turn your computer into a surveillance device.

Computers can be tapped by a number of methods, ranging from the installation of physical bugs, to the installation of surveillance software or remote interception of the radio transmissions generated by the normal operation of computers.

See the article computer surveillance for more details.

Photography

Photography is becoming more valuable as a means of surveillance. In recent years there has been a significant expansion in the level of stills and video photography carried out at public demonstrations in many countries. At the same time there have been advances in closed circuit television (CCTV) technology and computer image processing that enable digital images taken from cameras to be matched with images stored in a database.

Photographs have long been collected as a form of evidence. But as protest and civil disobedience become an ever greater liability to governments and corporations, images are gathered not only as evidence for prosecution, but also as a source of intelligence information. The collection of photographs and video also has another important function - it scares people.

Closed circuit TV

Closed circuit TV (CCTV) - where the picture is viewed or recorded, but not broadcast - initially developed as a means of security for banks. Today it has developed to the point where it is simple and inexpensive enough to be used in home security systems, and for everyday surveillance.

The widespread use of CCTV by the police and governments has developed over the last 10 years. In the UK, cities and towns across the country have installed large numbers of cameras linked to police authorities. The justification for the growth of CCTV in towns is that it deters crime - although there is still no clear evidence that CCTV reduces crime. The recent growth of CCTV in housing areas also raises serious issues about the extent to which CCTV is being used as a social control measure rather than simply a deterrent to crime.

The development of CCTV in public areas, linked to computer databases of people's pictures and identity, presents a serious risk to civil liberties. Potentially you will not be able to meet anonymously in a public place. You will not be able to drive or walk anonymously around a city. Demonstrations or assemblies in public places could be affected as the state would be able to collate lists of those leading them, taking part, or even just talking with protesters in the street.

See the article CCTV for more details.

Documentation trails

Modern society creates huge amounts of data. Every time you use a bank machine, pay by credit card, use a phone card or make a call from home you clock up electronic records of transactions. In the past these would have been called 'paper trails'. But today many of these records are electronic. This information, if obtained by the state, or obtained through unofficial channels (sorting your rubbish/bribing those in charge of keeping the information) can also describe how you live and work.

One of the greatest freedoms we have is to buy a book, or a newspaper, or to donate money to a cause, and do so with complete anonymity. When transactions are electronic, that anonymity is lost.

Marketing and credit reporting agencies rival the state intelligence services for their collection of dossiers. Today a whole web of information is collected by marketing companies in order to sell you things, or determine how companies should run their marketing strategies. The details from a whole range of transactions, from credit agreements to the electoral register, are all purchased by market research companies to provide information on the habits of the public as potential customers.

Data profiling

Most of the information described above is generalised - it identifies trends from large quantities of data, and the role of the individual in that is very minor. Data profiling on the other hand is a process whereby someone seeks to get as much information about you as possible - personally - in order to assemble a picture of your specific life and habits.

Data profiling is very important in intelligence operations and has many applications - from deciding whether a person is vulnerable to bribery, through to conducting profiling of suspects to decide where they can be apprehended. The state has powers to do this by issuing orders that banks, credit companies or even your employer supply data to them. But even corporations and private investigators can assemble this information if they are well connected.

Much personal information is not very well protected, because small amounts of information is not considered sensitive. But once this information is brought together it can describe in detail the actions, habits and preferences of the individual.

Historically, much information has been protected by practical obscurity, the difficulty of aggregating or analyzing a large number of data points. This has lead to unexpected results as birth records, property tax rolls, and other records are brought online, where they can be easily collated by computer.

Identities

There are instances when we wish to hide our identity - to remain anonymous - for a whole range of reasons. To eliminate this will be a serious erosion of our civil liberties. This is possible as we move towards the development of 'electronic identities. There are two aspects to this:

• the development of systems of credentials - where you carry a card or a document; and
• the development of biometrics - where you are recognised from your 'unique' biological characteristics.

• The banking industry - who wish to find a more fool proof system of verifying financial transactions than the possession of a plastic card or the use of a signature;
• Law enforcement - who want a way of identifying individuals easily, perhaps even when they are unwilling to co-operate.

As a means of combating the problem of people carrying or falsifying credentials, researchers are increasingly looking at biometrics - measuring biological or physical characteristics - as a way to determine identity. One of the oldest forms of biometrics is fingerprints. Every finger of every person (identical twins included) has a unique pattern, and these have been used for many years to help identify suspects in police enquiries. A finger/thumb print can be reduced to a brief numeric description, and such systems are being used in banks and secure areas to verify identity.

A more recent development is DNA fingerprinting, which looks at some of the major markers in the body's DNA to produce a match. However, the match produced is less accurate than ordinary fingerprints because it only identifies people to a certain probability of matching. Further, identical twins have identical DNA, and so are indistinguishable by this method.

Handwriting - primarily your signature - has been used for many years to determine identity. However other characteristics of the individual can also be used to check identity. Voice analysis has been used for some as a means to prove identity - but it is not suited to portable use because of the problems of storing a range of voice prints. But perhaps the two most viable portable systems, because identities can be reduced to a series of numeric data points rather than a detailed image or sound, are:

• Iris recognition. Some banks are now using this method of security. The human iris has an almost unique pattern that can be reduced to a simple series of numeric descriptions. The iris reader matches the pattern of the iris to one stored and verifies the match.
• Facial recognition. The configuration of the facial features can be used to accurately identify one individual from another. Again, the configuration can be reduced to a short numeric description.

Human operatives and social engineering

The most invasive form of surveillance is the use of human operatives. This takes two forms:

• The use of operatives to infiltrate an organisation; and
• The use of social engineering techniques to obtain information.

Personal counter-surveillance

Counter-surveillance is reliant on good information security planning. Protecting information is the first stage of counter-surveillance. But counter surveillance must also be seen as a balancing of opposing objectives.

If you are very good at restricting all information, that state or corporations will have problems monitoring you. However, you are also likely to become more isolated and secretive in the process. Therefore, like information security, counter surveillance requires an effort to protect those activities or information that are sensitive, whilst giving less emphasis to those activities that can be open to all.

Information security is primarily based on protecting equipment with security procedures and barriers. Personal counter-surveillance is based on much the same process, but instead you provide security and barriers around your own personal habits. As humans we are creatures of habit. If we exhibit very predictable habits, this makes monitoring of our activities easier. But if on certain occasions we break our habits, it can also give away the fact that we are doing something at that time which is not part of our everyday work.

The best way to begin thinking about avoiding surveillance is to think about breaking the regular patterns in your life. This masks regular activity, so making it harder to practice routine surveillance. But it also masks the times when you may undertake activities out of the ordinary.

Breaking regular patterns does not mean going to bed at different times, or working different hours everyday. Instead it requires that any activities you wish to avoid being the subject of surveillance are integrated into the other events in your life - but not to the extent that they become predictable. If you change the route you take to work or to shop on a random basis, you make it more difficult to monitor your movements. If you build irregular appointments into activities that might involve surveillance, it creates a background 'noise' in the pattern of your activities that masks any change in your habits.

Securing the information on your computer will help your overall security. If you have a portable computer you are presented with a whole new problem because you move that system outside of your ordinary systems of security and access barriers. Therefore special care should be taken with portable computers:

• The system should be secured with a BIOS password to prevent booting;
• Use encryption of the hard disk, where possible, to prevent access to the contents of the hard disk if it is removed from the machine;
• Ensure that your portable computer has different passwords than those used on your static equipment.

Primarily, when dealing with sensitive information, avoid generating any kind of documentation or opportunities for surveillance. Think about implementing the following as part of your work:

• Travel -
  • If you are travelling to a sensitive meeting take a different route going there and coming back, and if possible do not use the same bus or station when going to or leaving the location you are travelling to. This lessens the likelihood that your destination will be identified.
  • If travelling on sensitive business, try to use public transport. Using you own private cars will provide a traceable identity.
  • To avoid the CCTV systems in public places move with the crowd; don't rush, don't cut corners, and don't look around for CCTV cameras.
  • If you can build in other events/appointments as part of your journey, that will help provide an alternate motive for travelling to that area of a town or city.
  • Facial recognition systems work primarily on the configuration of facial features. To work they need to get a good view of the face. Looking at a slight angle towards the ground, and wearing a hat with a brim, helps fool the system.
  • If you travel using public transport, roaming tickets are preferable to tickets for a specific journey - they give you more flexibility ov
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