This chapter discusses controversies around encryption and communications interception. It covers how laws like the Communications Assistance for Law Enforcement Act require technology to enable wiretapping with a court order. Privacy advocates object that this could compromise security and privacy. The chapter also describes how encryption works, its uses for military, business and human rights activists, and debates over export controls and domestic policies around key escrow.
Just created a slideshare presentation giving a basic introduction to the Confidentiality, Integrity & Availability (CIA) Security Model. You can see more slideshows on http://www.slideshare.net/ImranahmedIT or visit my website: http://imran-ahmed.co.uk
Just created a slideshare presentation giving a basic introduction to the Confidentiality, Integrity & Availability (CIA) Security Model. You can see more slideshows on http://www.slideshare.net/ImranahmedIT or visit my website: http://imran-ahmed.co.uk
The concept of online anonymity refers to keeping the identity of communicators hidden. Online privacy is more than just encrypting and decrypting data; it also includes the concealment of identity. The Dark Web is a section of the Internet that achieves the highest levels of anonymity and security. Dark Web, which, unlike the normal web, requires specialized access procedures, is regarded as the "Evil Twin of the Internet" since more than 57 percent of its area is occupied with unlawful content.
In present world, where computers/laptops and smart phone made it possible to extract other's secrets, a need has been imminent to handle such problems by Cyber Security Regime, which not only be launched by individuls(IT Expert) of organizations but the governments of the country should also play a vital role.
Cyber extortion is a crime involving an attack or threat of attack against an enterprise, coupled with a demand for money to stop the attack.
Cyber extortions have taken on multiple forms - encrypting data and holding it hostage, stealing data and threatening exposure, and denying access to data.
Malware locks out the user’s system and demands ransom.
Creates “Zombie Computer” operated remotely.
Individuals and business targeted.
This form of extortion works on the assumption that the data is important enough to the user that they are willing to pay for recovery.
There is however no guarantee of actual recovery, even after payment is made.
The first known ransomware was the 1989 "AIDS" trojan (also known as "PC Cyborg") written by Joseph Popp.
Basic tips for staying safe and protecting personal privacy on popular social media sites, including Facebook, Twitter, and Instagram. Designed for casual users of social media.
Learning Objectives:
1. Understand how this unique, emergent form of evidence can be used for criminal investigations and civil litigation e-discovery.
2. Discover the DoJ memo to law enforcement uncovered by FOIA stressing why and how to use social media in criminal cases.
3. See social media evidence recovered from smart phones, personal computers, and the cloud.
4. Learn the ethics of social media evidence collection including what you can and cannot do, if you want to keep your license that is.
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos meaning "covered, concealed, or protected", and graphein meaning "writing".
The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are forms of security through obscurity, whereas key-dependent steganographic schemes adhere to Kerckhoffs's principle.
The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. Plainly visible encrypted messages—no matter how unbreakable—arouse interest, and may in themselves be incriminating in countries where encryption is illegal.Thus, whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent, as well as concealing the contents of the message.
Steganography includes the concealment of information within computer files. In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. Media files are ideal for steganographic transmission because of their large size. For example, a sender might start with an innocuous image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it.
The concept of online anonymity refers to keeping the identity of communicators hidden. Online privacy is more than just encrypting and decrypting data; it also includes the concealment of identity. The Dark Web is a section of the Internet that achieves the highest levels of anonymity and security. Dark Web, which, unlike the normal web, requires specialized access procedures, is regarded as the "Evil Twin of the Internet" since more than 57 percent of its area is occupied with unlawful content.
In present world, where computers/laptops and smart phone made it possible to extract other's secrets, a need has been imminent to handle such problems by Cyber Security Regime, which not only be launched by individuls(IT Expert) of organizations but the governments of the country should also play a vital role.
Cyber extortion is a crime involving an attack or threat of attack against an enterprise, coupled with a demand for money to stop the attack.
Cyber extortions have taken on multiple forms - encrypting data and holding it hostage, stealing data and threatening exposure, and denying access to data.
Malware locks out the user’s system and demands ransom.
Creates “Zombie Computer” operated remotely.
Individuals and business targeted.
This form of extortion works on the assumption that the data is important enough to the user that they are willing to pay for recovery.
There is however no guarantee of actual recovery, even after payment is made.
The first known ransomware was the 1989 "AIDS" trojan (also known as "PC Cyborg") written by Joseph Popp.
Basic tips for staying safe and protecting personal privacy on popular social media sites, including Facebook, Twitter, and Instagram. Designed for casual users of social media.
Learning Objectives:
1. Understand how this unique, emergent form of evidence can be used for criminal investigations and civil litigation e-discovery.
2. Discover the DoJ memo to law enforcement uncovered by FOIA stressing why and how to use social media in criminal cases.
3. See social media evidence recovered from smart phones, personal computers, and the cloud.
4. Learn the ethics of social media evidence collection including what you can and cannot do, if you want to keep your license that is.
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos meaning "covered, concealed, or protected", and graphein meaning "writing".
The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are forms of security through obscurity, whereas key-dependent steganographic schemes adhere to Kerckhoffs's principle.
The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. Plainly visible encrypted messages—no matter how unbreakable—arouse interest, and may in themselves be incriminating in countries where encryption is illegal.Thus, whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent, as well as concealing the contents of the message.
Steganography includes the concealment of information within computer files. In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. Media files are ideal for steganographic transmission because of their large size. For example, a sender might start with an innocuous image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it.
A free software implementation of second-generation onion routing that help the user to be anonymous while using the internet so it protect the user’s privacy from being monitored
Some people use it in the wrong way which lead to what is called now “The Darknet” : A black spot in the internet which involve all the criminal activities on the internet such as selling Drugs, fraud, copyright infringement and piracy and so on.
A TSCM presentation that we provide to stakeholders. If you would like us to speak please provide a 4 hour time period and we will schedule your briefing.
Electronic surveillance has become a controversial practice in the U.docxshandicollingwood
Electronic surveillance has become a controversial practice in the United States and elsewhere. The fear is that civil liberties can be jeopardized by unregulated interception of telephone conversations, e-mail, and fax transmissions. Detractors argue that government use of these technologies can conceivably move well beyond legitimate application against threats from crime, espionage, and terrorism. Absent strict protocols to rein in these technologies, a worst-case scenario envisions state intrusions into the everyday activities of innocent civilians. Should this happen, critics foresee a time when privacy, liberty, and personal security become values of the past.
1. Is it sometimes necessary to sacrifice a few freedoms to protect national security and to ensure the long-term viability of civil liberty?'
2. How should new technologies be regulated? Can they be regulated?
3. How serious is the threat from abuses in the use of new technologies?
.
Lofty Ideals: The Nature of Clouds and EncryptionSean Whalen
An overview of the legal, privacy, and security issues surrounding modern cloud services and cryptography
Created as an alumnus talk for the Computer & Network Support Technology Fairfield Career Center senior class of 2016.
A free software implementation of second-generation onion routing that help the user to be anonymous while using the internet so it protect the user’s privacy from being monitored
Some people use it in the wrong way which lead to what is called now “The Darknet” : A black spot in the internet which involve all the criminal activities on the internet such as selling Drugs, fraud, copyright infringement and piracy and so on.
Describing the paradigm shift of Information security at Mass Internet age.
Bot Net Order look like Order 66.
What are "New Hopes " of cyber warfare ?
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1. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 1
Social, Legal, and Ethical Issues for Computers
and the Internet
Encryption and Interception of
Communications
2. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 2
A Gift of Fire
Encryption and Interception of
Communications
Overview of the Controversies
Intercepting Communications
Cryptography and Its Uses
Encryption Policy: Access to Software, Keys, and Plaintext
Fundamental Issues
3. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 3
Overview of the Controversies
Communications Privacy Affected by:
Interception of communications, including:
• Telephone, E-mail, and Web activity.
Restrictions on secure encryption.
• Exportation of strong encryption was viewed as a threat to national
security.
CALEA (Communications Assistance for Law Enforcement
Act).
• Communications technology must assist law enforcement.
Global surveillance systems.
• The constitutionality of domestic systems and the necessity of
international systems are under question.
4. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 4
Intercepting Communications
Wiretapping
Telephone:
• Pre-1934: used widely by government, businesses, and private sector.
• 1934: the Federal Communications Act disallowed unauthorized
wiretaps; many ignored the law.
• 1968: the Omnibus Crime Control and Safe Streets Act restricted
wiretapping by requiring a court order.
Q: Can law enforcement intercept communications without a court order?
5. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 5
…
Yes…in an emergency. A device called a “pen
register” and a “trap and trace” can be used
to determine the telephone numbers called or
the number from which a call is made. These
do not require as much court scrutiny and
justification as intercepting the contents of a
call.
6. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 6
Intercepting Communications
Wiretapping
New Technologies:
• 1986: Electronic Communications Privacy Act (ECPA) and its
amendments restricted government interception of e-mail, cell-phones,
etc..
• 2001: USA Patriot Act loosened restrictions on government wiretapping
and communications interception.
Q: Does the USA Patriot Act supersede ECPAs restrictions?
7. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 7
Intercepting Communications
Designing Communications Systems for
Interception and Tracking
Obstacles to interception:
• Incomplete pen-registers as a result of long distance service.
• Packet-mode communications (e-mail, file transfers, Internet phones).
Solutions:
• CALEA: Requires telecommunications equipment be designed to
ensure interception by law enforcement (with court order).
Q: Why did privacy advocates object to
CALEA?
8. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 8
…
Privacy advocates argued that finding packet
based items allowed the government to go
beyond what was necessary. They objected to
the increased authority to get numbers
entered after the initial phone call was made.
These numbers might be account numbers,
passwords, PIN’s, and so forth.
9. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 9
Intercepting Communications
Designing Communications Systems for
Interception and Tracking (cont’d)
CALEA
• Costs include modified hardware, software, and overuse by authorities.
(500,000,000!!!)
• Wiretappable systems vulnerable to criminal hacking, industrial spies,
etc..
• Competition weakened due to restricted changes and diversities.
Q: CALEA allows for the interception of PINs. Do you support this use?
10. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 10
Intercepting Communications
Carnivore
FBI’s system to intercept e-mail with a court order.
• Pro: Law enforcement needs this tool to fight crime.
• Con: All e-mail goes through FBI’s Carnivore system.
Q: Does Carnivore violate the 4th
Amendment? The right of the people to be secure in their
persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no
warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the
place to be searched, and the persons or things to be seized.
11. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 11
Intercepting Communications
NSA and Echelon
NSA (National Security Agency):
• Collects and analyzes communications to find threats to national
security.
Echelon:
• Member nations intercept communications for each other. It checks
Telephone conversations, e-mails, and downloads of targeted suspects.
Q: Should the NSA be permitted to intercept all e-mail entering and leaving
the U.S.?
12. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 12
Cryptography and Its Uses
Cryptography
Definition:
• Hiding data in plain sight.
Terms:
• Plaintext: Original, readable message or data.
• Cyphertext: Modified, unreadable message or data.
• Encryption: The act of converting plaintext into cyphertext.
• Decryption: The act of reverting cyphertext back to readable, plaintext.
Q: Are there other ways to hide a message in plain sight?
13. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 13
Cryptography and Its Uses
Public Key Cryptography
How it works:
• User creates a mathematically-related key pair (public and private
keys).
• Public keys are shared publicly; private keys are kept secret.
• Public keys are used to encrypt message or data.
• Private keys are used to decrypt message or data.
Benefits:
• No secret keys need be shared or transmitted.
• Very secure.
Q: How does key-size affect the ‘strength’ of encryption?
14. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 14
…
The larger the key size, the more possible keys
there are. If a 40-bit key is used, there are
2^40, or more than a trillion possible keys.
We now use 512-bit keys.
15. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 15
Cryptography and Its Uses
Encryption
Used by:
• Military personnel.
• Financial institutions.
• Human-rights activists.
• Government agencies.
• Anyone wanting to keep messages or data private.
Q: Why are strong encryption tools needed by human-rights activists?
16. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 16
Human Rights and the use of
Cryptography
`There has been no time that human rights concerns have been more visible than
recent years as networks of local and international activists bring abuses to light.
Global integration of telephone and fax lines are a direct cause.' (PoKempner,
1997) By providing quick and cheap communications and access to any kind of
information, the Internet is the first truly interactive mass medium. It is not only
used for fun and commercial purposes by the `consumers' but also used by those
campaigning against human rights abuses. There are many organizations
dealing with human rights abuses all around the world and these organizations
do use the Internet to communicate with their members or with dissident
groups. Before the governments can suppress the dissemination of critical
writings, and reports, the authors can distribute their work through the Internet
outside repressive regimes. It is well known that the Burmese dissidents(3) or
the Mexican Zapatistas use the Internet to communicate with the rest of the
world . It is critical and vital for human rights activists, political dissidents,
and whistle blowers throughout the world to facilitate confidential
communications free from government or any other intrusion. Strong
encryption is the only answer for this problem .
17. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 17
Cryptography and Its Uses
Steganography
Definition:
• Hiding data so that its existence is not known.
Examples:
• Digital watermarks.
• Hiding text in image files.
Used by:
• Military,
• Publishers,
• Anyone wishing to hide messages or data.
18. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 18
Encryption Policy: Access to Software,
Keys, and Plaintext
Secrecy and Export Controls
Control of Secrecy
• The NSA designs unbreakable codes for the U.S. government.
• The NSA attempts to break codes used by other governments.
• In the past, the NSA also controlled the funding for and publishing of
cryptographic research.
Control of Exportation
• Early U.S. policy prevented the exportation of strong encryption.
• Meanwhile, foreign production and use of strong encryption negatively
impacted U.S. competition in the world market.
• Cryptographic researchers, privacy advocates, and others successfully
challenged exportation restrictions.
Q: Why did the U.S. government insist on controlling export of strong crypto?
19. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 19
…
The government argued that the export
prohibition was necessary to keep strong
encryption from terrorist and enemy
governments.
20. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 20
Encryption Policy: Access to Software,
Keys, and Plaintext
Domestic Encryption
Key Escrow
• Third-party (some organization other than the user) entrusted with
non-public encryption keys. Problem…the government could get
access with a court order.
Real-time Access to Plaintext
• Immediate decryption of encrypted data.
• Long-time goal of the FBI.
Key Recovery
• The ability to recover encrypted files if necessary.
• Used by some businesses.
Q: Should key recovery systems be voluntary or compulsory?
21. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 21
…
Businesses often want key recovery…if an
employee is not available and someone else
must read encrypted files…problem.
The government argued to make key recovery
compulsory so that law enforcement agencies
would be able to obtain messages and have
them decoded by escrow agents by using
search warrants and court orders.
22. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 22
Fundamental Issues
Role of Secrecy
U.S. Policy Keeps Secret:
• Cryptographic research.
• Wiretap ease or difficulty.
• Encryption algorithms.
• Software (e.g. Carnivore).
• Global endeavors (e.g. Echelon).
Problems:
• Secret algorithms cannot be tested by experts.
• ‘Backdoors’ might exist.
• NSA-influenced wiretap and encryption exportation bills.
Why? Disclosing this
information can help
criminals and terrorists!
23. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 23
Fundamental Issues
The Ever-changing Status Quo
Past:
• Simple codes and cyphers.
Present:
• 512-bit RSA encryption.
• AES (Advanced Encryption Standard).
Future:
• Quantum computing.
• Quantum cryptography.
Q: Today, do coders or decoders have the upper hand?
24. A Gift of Fire, 2ed Chapter 3: Encryption and Interception of Communications 24
Fundamental Issues
Trust in Government
Appropriate or Abusive?
• Wiretapping by FBI and local police.
• Wiretapping by NSA.
• Strong encryption restrictions.
• Roving wiretaps.
• Cell-phone tracking (and E-911).
• Key logger systems.
• Development of a nationwide standard for surveillance.