Encryption photos on Flickr

As the 21st century dawned, an emerging generation of artists expanded the performance of self-fashioning, in which dress functions as a signifier of disidentification with the dominant social orders; their aim was to formulate modes of expression that affirm communal identity. In an age when issues of race, ethnicity, religion, gender, and sovereignty dominate national and geopolitical discourse, textiles, "as dense and multivalent sites of encryption," may, art historian Julia Bryan-Wilson argues, "alert others to our sense of self and signal our attempt to collectively belong."

In 2003 Liz Collins created "Pride Dress", in collaboration with designer Gary Graham, as part of a series of representations of the seven deadly sins. Today, the tattered gown with its torn and distressed flags precariously tacked together transcends its initial signification to reverberate with the roiling gender wars that rend the fabric of American society.

Alan Turing - III by Peter Denton

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Alan Turing (1912-54) was an English mathematician, logician, cryptanalyst and computer scientist. He was highly influential in the development of computer science and is widely considered to be the father of both computer science and artificial intelligence. He was also the man who, with his team, broke the code of the highly complex Enigma and Lorenz cipher machines, which kept German military and strategic communications secret during the Second World War.

This is a detail from an outstanding life-size sculpture created from half a million pieces of slate by Stephen Kettle. It's to be found in the Block B museum at Bletchley Park, near Milton Keynes.

I’ve gone into a little more detail about Alan Turing here. It’s a tragic, yet inspirational, story.

Alan Turing - I by Peter Denton

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Alan Turing (1912-54) was an English mathematician, logician, cryptanalyst and computer scientist of dazzling ability. He was highly influential in the development of computer science and is widely considered to be the father of both computer science and artificial intelligence.

More than that, perhaps, during the Second World War he and his team broke the code of the highly complex Enigma and Lorenz cipher machines, which kept German military and strategic communications secret. This meticulous, painstaking work was done at Bletchley Park, Britain’s code-breaking centre. After the war he worked at the National Physical Laboratory in Teddington, where he created one of the first designs for a stored-program computer, the ACE.

Alan Turing was gay, and was prosecuted in 1952, when homosexual acts (even between adults in private, as in his case) were illegal in the UK. This conviction resulted in his security clearance being removed, and despite his acknowledged brilliance he was barred from continuing with his cryptographic work for GCHQ. He committed suicide in 1954 at the age of 41. Fifty-five years later, in 2009, the British government formally apologised for the way in which he was treated after the war; and in 2013 he received a long overdue royal pardon.

This is a detail from an outstanding life-size sculpture in half a million pieces of slate by Stephen Kettle. It's to be found in the Block B museum at Bletchley Park, near Milton Keynes. Oh, and that's a portrait of Alan Turing in the background. Two heroes for the price of one.

View on black - it looks good.

door key by woodleywonderworks

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[key test]

iPhone 5S by Kārlis Dambrāns

26

Quantum processor by Steve Crawford

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IBM quantum processor internals on display at #MakerFaire 2018 San Mateo, California.

It's a #SignOfTheTimes that this type of processing has the potential to solve currently unsolvable problems at far lower than current power consumption and could render current encryption algorithms obsolete in less than a decade.

The actual processor is in the silver cylinder at the bottom marked with a "Q". In operation it would be in a container chilled to liquid helium temperatures around 4 degrees above absolute zero - much too warm for the processor. The various stages from top to bottom provide additional levels of cooling to bring the processor down to around 0.01 degrees above absolute zero, colder than deep space.

The tubes and rigid coax are part of the cooling system and guides that relay the microwave signals to and from the processor.

System Failure by David Pearson

30 15

Disassembled an old hard drive that had failed. Always wanted to shoot the platters and head stack. These things have a nearly perfect mirrored surface, of course, which allows for some possibilities.

The real original is 18 megapixels (not uploaded here on Flickr), but it's still cool larger.

Trapped by Fascinating Light Photography

11 30

Computers! Don't you love them?! I can't begin to tell you how much fun I'm having with mine at the moment. I keep my photos and lightroom catalogue on an external hard drive so that I can easily use it between systems. Last week I was running out of space so I ordered a larger drive and when it arrived went to copy everything across and it wouldn't. I've now been fighting with it for over a week and I may finally be close to some sort of success. I've lost some images, but nothing crucial I hope. All my images are still on the drive I just can't get it to copy them off. Like everyone I don't back up enough and my last backup was 3 months ago so if worse comes to worst I've only lost 3 months but it's annoying. I havent' totally figured out the problem. I use an encrypted partition and thought it was something to do with the encryption, then I thought it was bad sectors on the drive but now I think it is the drive controller itself. Wish me luck, I've been slowly salvaging folders in between crashes and I think I'm almost there now. Hopefully going to successfully rebuild everything tonight. :o)

I don't get much opportunity for photography and last weekend was one of my rare opportunities. As usual the clouds saw me coming and scooted off but to be honest I quite like nice sunny days and clear skies and it turned into a beautiful autumnal weekend with some of the best weather I've seen in Scotland for a long time.

I think I missed a trick with this shot because afterwards I realised it would probably have made a great vertorama.

anti hero encryption by Eldon Underhill

12

encryption by ed ed

11 4

(O)000o by floebee

12 27

dark | light | closer

[1] [2] [3] [4] [5] [6] :: [semaphore] sensory

visual study in

perception of self

and the environment

in relation to the five

physical senses

Open Padlock (Gold) by Ngọc Hà

46 6

Antique grungy padlock with key. Isolated on white.

Deepak - Hope by Niroshan de Silva

This image has been digitally watermarked; unauthorised usage can be detected through Digimarc's Netspider. Digimarc encryption survives digital manipulation and even the printing process.

Some, but not all, of the images on this site can be purchased for reproduction elsewhere. Initial enquiries should be made via email to nirodez@gmail.com

Please remember to quote the image name (preferably with a brief description of the image) and give as much information as possible as to the probable usage. A fee can then be negotiated.

Copyright Protected - Niroshan de Silva 2007

Location: Srilanka

CRYPTO014A by Grudnick

7 1

Hebern Electric Code

This is the first encryption machine patented (1912) by Edward Hugh Hebern. Mr Hebern developed this while serving time as a horse thief.

ｻｻｻCYBER FAIR JUNE 2024 ｻｻᴄʏʙᴇʀ ꜰᴀɪʀ ᴏᴘᴇɴ ᴊᴜɴᴇ 2-22 2024ｻｻｻｻ by 【⛧ŐĶαოι⛧】

102

ｻ [ ᴄʏʙᴇʀ ꜰᴀɪʀ ᴘᴀɢᴇ ] ｻ

² ᴶᵘⁿᵉ ⁻ ⁶:⁰⁰ ᵃᵐ ˢˡᵗ ⁻ ᴱᴬᴿᴸʸ ˢᴴᴼᴾᴾᴵᴺᴳ

- ̗̀ϟ ̖́-CYBER FAIR EVENT- ̗̀ϟ ̖́-

Security by Anonymous Account

28 13

Shot laying in front of the (empty) bank vault in Frankfurt.

Soma Encryption by Josep Trepat Font

6

De Girona. DIPA. Aigua, malt d'ordi, civada, blat, llúpol (Mosaic, Citra, Azacca Cryo i Columbus) i llevat. 8%. Vaja, en els ingredients deia que duia gerds i lactosa i m'havia fet a la idea de tastar una Soma diferent, i no, no duu gerds i és de les típiques. Boníssima, això sí, com sempre amb Soma. #soma #dryhopping #IPA #IndiaPaleAle #IndianPaleAle #ale #localbeer #craftbeer #cervesaartesana #cervesaartesanal #beer #pivo #birra #cervesa #cerveza #olut #øl #пиво #bière #beerporn #beergeek #beernerd #craftbeerlive #localbeer#hophead #craftbeernotcrapbeer #craftbeerporn #starkol #piwo #beerpic #bierre

3D Data Security by Chris Potter

22

Please give attribution to 'ccPixs.com' (and point the link to www.ccPixs.com). Thanks!

Social Media: www.seywut.com/Chris

Enigma Machine Keyboard and Plugboard by scattered1

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The Enigma Machine played a key role in World War II. The German military depended on the Enigma Machine to encrypt communications, but the Allies invested a tremendous amount of effort in decryption and achieved significant success. This provided the Allies a large advantage.

I believe this is a German Wehrmacht (military) Enigma (please let me know if that is not correct). Near the top are the keys pressed by the operator, entering the characters to be encrypted. Beyond the keyboard is the lampboard. As the operator pressed a key, the encrypted version of that letter would light on the lampboard. At the bottom of the photo is the plugboard. Routine wires in different ways on the plugboard contributed to the encryption of characters.

Seen at the National World War II Museum in New Orleans, Louisiana.

Thermocline by Matt Molloy

30 1

"A thermocline (sometimes metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. water, such as an ocean or lake, or air, such as an atmosphere) in which temperature changes more rapidly with depth than it does in the layers above or below."

en.wikipedia.org/wiki/Thermocline

I was taught about this when learning to scuba dive. The strong warm/cool split of this image made me think of it. And then my mind wandered to how strange it is that I can dig up this tiny tidbit of information I heard years ago (and haven't thought much since then) but I can't remember where I put my keys two minutes ago, or the chords to that song I wrote the other day. I think our brains could use a less destructive encryption method and more hard drive space. Hurry up Science, my clock is ticking!

I made this image from 548 photos. I stacked the first 228 using the ultra streaks present in this script, advancedstacker.com and the last 320 photos were stacked "normally" with the lighten layer blending mode. (also automated with the advanced stacker script)

[365:037] by Jason Arends

14 15

this strange mark appeared on my hand tonight... wish i knew what it meant :-P

photo replaced 8/18 with cropped version that appears in Scientific American magazine, September 2007 issue, p30

Secured Again by Matt Gendron

2

The Code Talkers: And now there are none.... by Geoff Quinn

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Keith Little, one of the last living Navajo Code Talkers, passed away on Tuesday, January 3rd, 2011. His friend, Chester Nez, died last Wednesday, June 4, 2014, and was the last of the Code Talkers. I bumped into Keith and eleven of his fellow Code Talkers on New York's Fifth Avenue located toward the end of the City's 2011 Veteran's Day parade (all I was trying to do was to get across Fifth Avenue to meet friends). I first read about them in the book, "With the Old Breed," by Eugene Sledge. Keith recalls being a young Navajo boy at a reservation school and being reprimanded for speaking his native language. And yet it was this skill -- and his dignity in the face of such prejudice -- that made him and his fellow Code Talkers so exceptional. I feel as if we have lost a special link. He was recruited as a very young man in 1943 to join 420 Navajos in a special encryption unit of the US Marines. The Code Talkers transmitted and received messages in their native Navajo language. They were assigned to all Marine Units and were in the front lines of all of the Pacific battlefields of World War II (Keith was a member of the 4th Marine Division). The code proved unbreakable given its uniqueness and the fact that it was an unwritten language that depended on the tone of a word for its meaning -- so complex that it really needed to be learned in childhood. The specific code eventually grew to include 411 Navajo words.

The Future Is Now At Cyber Fair! by Seraphim SL

7

bit.ly/3mQ5v6B

The Future Is Now At Cyber Fair! by Seraphim SL

7

Cyber spies are still using these old Windows flaws to target their victims0 by Mohanraj Durairaj

Cyber spies are still using these old Windows flaws to target their victims0

Star Trek, First Contact. Screen Captures by Morbius19

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Star Trek, First Contact (Paramount, 1996).

youtu.be/wxyZQR2d6yw Trailer

youtu.be/GTQzusrfCxc?t=3s

Star Trek - 'Beyond First Contact' The Borg - Making The Movie.

Starring Patrick Stewart, Jonathan Frakes, Brent Spiner, LeVar Burton, Michael Dorn, Gates McFadden, Marina Sirtis, Alfre Woodard, James Cromwell, Alice Krige, Neal McDonough, Robert Picardo, and Dwight Schultz. Directed by Jonathan Frakes.

Captain Jean-Luc Picard awakens from a nightmare about his Borg assimilation experience to an incoming message from Admiral Hayes. Hayes informs Picard that Deep Space Five reported that a colony has been destroyed. Completing the Admiral's sentence, Picard realizes who destroyed the colony — the Borg.

Picard calls a meeting and informs his senior officers that their ship has been instructed to patrol the Neutral Zone. Their orders are to protect the area from any possible Romulan uprising during a Borg attack. Despite protests from his officers, Picard remains faithful to his orders and the U.S.S. Enterprise NCC 1701-E begins to patrol the area. Later, Picard regretfully tells Riker that it is his own fault they are stuck in the Neutral Zone. Starfleet believes Picard to be too emotionally involved with the Borg because of his previous assimilation to tactically complete a mission against them.

The men return to the bridge to learn that Starfleet has engaged in combat with the Borg. Intercepting messages between the starships, the crew learns that the Federation is losing. Picard, with his Borg experience, knows he can help the fleet. He informs his staff that he will make a decision directly in opposition to Starfleet commands. With no objections from his crew, Captain Picard gives the order and the starship Enterprise sets a course for Earth and the attacking Borg cube.

A massive battle ensues and it appears that the Federation will lose the fight. Despite serious structural damage to the Borg cube, their strength does not weaken. Even the U.S.S. Defiant, commanded by Worf, does not appear to be able to turn the tides of the battle. As the starship Defiant is about to ram the Borg ship on a suicide run, the U.S.S. Enterprise beams aboard its crew, including Worf. Picard, having an inside perspective of the Borg and their vessel, focuses the firepower of the fleet on coordinates he knows to be critical. Just as the main ship is destroyed, a spherical escape pod flies out. The sphere creates a temporal vortex, catching the starship Enterprise in its wake. Immune to the paradoxes created by the time travel, the starship's crew learns that Earth at the present time appears to be inhabited entirely by the Borg. The commanding officers realize that the Borg have gone into the past and assimilated Earth, so they follow them back in time to repair the damage the Borg have done.

On Earth, over three centuries earlier, a somber Lily Sloane accompanies a stumbling, drunk Zefram Cochrane out of a bar after a night of revelry. Then, Lily notices a fast moving light. She hardly has time to ask what the object is, when the Borg vessel attacks. Back aboard the Enterprise, Picard demands that Data tell him the exact date and location the Borg ship is attacking. The location: central Montana. The date: April 4, 2063 — the day before First Contact. Realizing that the Borg have come to prevent first contact between alien life forms and humans, the crew knows they must stop the Borg and facilitate this exchange. They destroy the Borg sphere, and Dr. Crusher, Captain Picard, Commander Data, Commander Riker, Counselor Troi and other U.S.S. Enterprise crew transport down to Earth to survey the damage.

At the Borg attack site in Montana, the crew finds destruction and chaos. They split into groups to search for Cochrane. Data and Picard hunt for Cochrane's warp ship, the Phoenix. There they encounter a very angry and confused Lily, who believes Data and Picard to be members of a coalition that broke the cease-fire after World War III. She shoots at them in a rage, but impervious to bullets, Data approaches Lily. Overcome by fear and radiation, she falls to the ground. Dr. Crusher diagnoses Lily with radiation sickness caused by the damaged Phoenix, and inoculates the entire crew. Against Picard's better judgment, Crusher takes Lily to sickbay. Geordi is called to help repair the warp vessel and Picard becomes intrigued by its historical significance. In this vessel began the future as the world would know it, and the past as Picard remembers it. He reaches out to touch the ship. Data, curious about the human need for tactile reinforcement, attempts to create the same feelings he observes in Picard, but is unsuccessful in duplicating this aspect of humanity.

Aboard the ship, two crewmembers are sent to examine unexplained maintenance problems, and both disappear. Picard is called to the ship and discovers that the survivors from the Borg sphere have transported onto the ship and are taking over Deck 16. While Picard arranges teams to fight them, the Borg manipulate the climate of the deck to suit their needs and begin to spread throughout the ship. When the Borg attack sickbay, Crusher, her staff, and Lily escape through a Jeffries tube, thanks to a distraction by the ship's Emergency Medical Hologram. While Crusher leads the group down the passageway, Lily steals away in a different direction.

On Earth, Riker finds Troi and Cochrane drunk in a bar. Troi justifies that the only way she could get Cochrane to talk to her was by shooting Tequila with him. Denying her drunken state, Troi offers her professional opinion on Cochrane. She explains, "He's nuts."

Picard and his team are tracking the Borg through the starship. As Crusher and her staff find Worf's team, Picard's team encounters the Borg, who have begun to assimilate U.S.S. Enterprise crewmembers. Worf's team engages the Borg in combat, but the enemies adapt to the crew's weapons too quickly to make any difference. The teams are ordered to regroup on Deck 15, but Data is captured. Picard cannot save him, so he quickly crawls into a Jeffries tube to escape. Face to face with Picard, Lily steals his phaser and demands an explanation and escape route. Picard agrees.

Geordi shows Cochrane the starship Enterprise through a large telescope on Earth and tries to convince him to launch his vessel the next morning. Geordi glorifies Cochrane by explaining that his ship will make first contact with alien life forms. Humanity will be saved if Cochrane launches his ship. Still drunk, Cochrane agrees.

Aboard the ship, the Borg Queen introduces herself to a bound Data, claiming that she is the Collective. Reactivating Data's emotion chip, the Borg begin to graph organic, human skin onto the android's arm. As Data is overcome by this new human sensation of touch, something he never thought possible, the Borg continue their work.

Lily and Picard wander through the service deck as the captain attempts to explain what has happened between Lily's time and his own. She begins to calm down until they suddenly run into a Borg-infested area. Quickly escaping in the Holodeck, Picard activates a Dixon Hill program. At a dance, he and Lily try to blend in without being noticed by the Borg. Following the Holodeck's story, Picard searches for Nicky the Nose and takes his machine gun. Killing the Borg with the gun, Picard retrieves the memory chip that contains all of the information the Borg has received. Lily then notices that the two dead Borg were once crewmembers of the U.S.S. Enterprise.

Back on Earth, Cochrane keeps hearing what an amazing historical figure he is and begins to question whether or not he wants to go through with the launch. He doubts his own nobility and flees the launch site. Geordi and Riker attempt to catch up with Cochrane in the woods and are forced to stun him with a phaser to return him to the Phoenix.

Lily and Picard join the rest of the surviving crew and discover that the Borg are outside of the ship. The retrieved memory chip reveals that they are reconfiguring the main deflector in order to contact the Borg of this century, calling them to Earth to assimilate the planet. Picard, Worf and Lieutenant Hawk put on space suits and venture onto the surface of the starship to stop the Borg.

Aware of Data's desire to become human, the Borg Queen offers him the chance to be entirely covered in human flesh and join the Borg, in an attempt to get the encryption codes from Data so she can obtain total control over the U.S.S. Enterprise. Outside the Enterprise, Hawk, Worf and Picard attempt to unlock the deflector dish. Attacked by a Borg, Worf's suit begins to depressurize. Two Borg are killed and Hawk is attacked. As the dish is released, a now-assimilated Hawk attempts to kill Picard. Worf saves the captain, but Hawk is killed. Picard and Worf then destroy the free-floating deflector dish.

On Earth, Cochrane explains to Riker that his only motivation for inventing warp travel was money. He never expected to save mankind, become a hero, or be instrumental in the founding of a new civilization. He simply wanted to retire in peace.

An argument ensues aboard the Enterprise as the majority of the senior officers believe that they should evacuate the ship, destroying it and the Borg. Picard won't give up, and insists they stay. Challenged by Worf, Picard orders him off the Bridge. Lily follows Picard into his ready room and demands that he explain his obsession with fighting the Borg. Picard declares he won't sacrifice the starship, and swears to finally make the Borg pay for all they've done. Lily quietly and calmly compares Picard to Captain Ahab, forever fighting his white whale — the Borg. Realizing that this fight could only destroy himself and his crew, Picard decides to evacuate the ship. Worf, Picard and Crusher activate the ship's self-destruct sequence. The countdown begins, and the crew leaves in escape pods. Picard surveys his ship and prepares to leave when he hears Data calling him.

Meanwhile , the earth-bound crew and Cochrane begin takeoff. Cochrane, Geordi and Riker take off in the Phoenix, and with music blaring, the three men launch successfully into orbit.

On the ship, Lily and Picard say good-bye and the captain goes to save Data. Entering Engineering, Picard confronts the Borg Queen, whom he knows from his experience with the Borg. The queen reminds Picard that it was not enough that he was assimilated, but that he needed to give himself freely to the Borg — she wished him to stand by her side as an equal to further the power of the Collective. Picard offers himself in exchange for Data, but the android does not comply. He refuses to leave, and at the queen's command, disarms the self-destruct sequence. He quickly enters the encryption codes, offering full control of the Enterprise to the Borg.

As Cochrane's ship nears warp, Data arms the U.S.S Enterprise's weapons and aims them at the defenseless Phoenix. At the Borg Queen's order, Data fires, but the missiles fail to hit the Phoenix. His deception of the Borg complete, Data smashes a conduit, releasing a gas that floods engineering, killing all organic material. As the Borg are destroyed, Picard climbs to safety and the Borg Queen falls into the deadly gas. With the Borg threat gone, Cochrane safely completes humanity's first warp flight.

Celebrating the flight back on Earth that night, Cochrane and the Enterprise crew see an alien ship land nearby. The doors open, and Zefram Cochrane makes Earth's first contact with an alien race — the Vulcans. Picard and his crew beam out, having witnessed this historic event, and the U.S.S Enterprise NCC 1701-E returns to the 24th century.

SEC 280 Final Exam by Leah Nance

1 1

SEC 280 Final Exam

Purchase here

chosecourses.com/index.php?route=product/category&pat...

Product Description

SEC 280 Final Exam

(TCO 2) What is XKMS?

Key Management Specification, which defines services to manage PKI operations within the Extensible Markup Language (XML) environment

An XML standard for e-mail encryption

An XML standard that is used for wireless data exchange

A primary XML standard that is for application development

(TCO 2) All of the following are techniques used by a social engineer EXCEPT for which one?

An attacker replaces a blank deposit slip in a bank lobby with one containing his own account number

An attacker calls up the IT department posing as an employee and requests a password reset

An attacker runs a brute-force attack on a password

An attacker sends a forged e-mail with a link to a bogus website that has been set to obtain personal information

(TCO 2) Attackers need a certain amount of information before launching their attack. One common place to find information is to go through the trash of the target to find information that could be useful to the attacker. This process of going through a target’s trash is known in the community as _____

Trash rummaging

Garbage surfing

Piggy diving

Dumpster diving

(TCO 2) What are the SSL and TLS used for?

A means of securing application programs on the system

To secure communication over the Internet

A method to change from one form of PKI infrastructure to another

A secure way to reduce the amount of SPAM a system receives

(TCO 2) What are the security risks of installing games on an organization’s system?

There are no significant risks

Users can’t always be sure where the software came from and it may have hidden software inside of it.

The users may play during work hours instead of during breaks

The games may take up too much memory on the computer and slow down processing, making it difficult to work

(TCO 2) What is the ISO 17799?

A standard for creating and implementing security policies

A standard for international encryption of e-mail

A document used to develop physical security for a building

A document describing the details of wireless encryption

(TCO 3) A(n) _____ is a network typically smaller in terms of size and geographic coverage, and consists of two or more connected devices. Home or office networks are typically classified as this type of network

Local-area network

Office-area network

Wide-area network

(TCO 3) What is the main difference between TCP and UDP packets?

UDP packets are a more widely used protocol

TCP packets are smaller and thus more efficient to use

TCP packets are connection oriented, whereas UPD packets are connectionless

UDP is considered to be more reliable because it performs error checking

Internal-area network

(TCO 3) Unfortunately, hackers abuse the ICMP protocol by using it to _____.

Send Internet worms

Launch denial-of-service (DoS) attacks

Steal passwords and credit card numbers

Send spam

(TCO 3) Which transport layer protocol is connectionless?

UDP

TCP

IP

ICMP

(TCO 3) Which of the following is a benefit provided by Network Address Translation (NAT)?

Compensates for the lack of IP addresses

Allows devices using two different protocols to communicate

Creates a DMZ

Translates MAC addresses to IP addresses

(TCO 3) Which transport layer protocol is connection oriented?

UDP

RCP

IS

ICMP

(TCO 3) Which of the following is an example of a MAC address?

00:07:H9:c8:ff:00

00:39:c8:ff:00

00:07:e9:c8:ff:00

00:07:59:c8:ff:00:e8

(TCO 4) All of the following statements sum up the characteristics and requirements of proper private key use EXCEPT which one?

The key should be stored securely

The key should be shared only with others whom you trust

Authentication should be required before the key can be used

The key should be transported securely

(TCO 4) It is easier to implement, back up, and recover keys in a _____.

Centralized infrastructure

Decentralized infrastructure

Hybrid infrastructure

Peer-to-peer infrastructure

(TCO 4) When a message sent by a user is digitally signed with a private key, the person will not be able to deny sending the message. This application of encryption is an example of _____.

Authentication

Nonrepudiation

Confidentiality

Auditing

(TCO 4) Outsourced CAs are different from public CAs in what way?

Outsourced services can be used by hundreds of companies

Outsourced services provide dedicated services and equipment to individual companies

Outsourced services do not maintain specific servers and infrastructures for individual companies

Outsourced services are different in name only. They are essentially the same thing

(TCO 4) Cryptographic algorithms are used for all of the following EXCEPT _____.

Confidentiality

Integrity

Availability

Authentication

(TCO 6) A hub operates at which of the following?

Layer 1, the physical layer

Layer 2, the data-link layer

Layer 2, the MAC layer

Layer 3, the network layer

(TCO 6) Alice sends an e-mail that she encrypts with a shared key, which only she and Bob have. Upon receipt, Bob decrypts the e-mail and reads it. This application of encryption is an example of _____.

Confidentiality

Integrity

Authentication

Nonrepudiation

(TCO 6) The following are steps in securing a workstation EXCEPT _____.

Install NetBIOS and IPX

Install antivirus

Remove unnecessary software

Disable unnecessary user accounts

(TCO 8) Which of the following is a characteristic of the Patriot Act?

Extends the tap-and-trace provisions of existing wiretap statutes to the Internet, and mandates certain technological modifications at ISPs to facilitate electronic wiretaps on the Internet

A major piece of legislation affecting the financial industry, and also one with significant privacy provisions for individuals

Makes it a violation of federal law to knowingly use another’s identity

Implements the principle that a signature, contract, or other record may not be deleted

Denies legal effect, validity, or enforceability solely because it is electronic form

(TCO 8) The Wassenaar Arrangement can be described as which of the following?

An international arrangement on export controls for conventional arms as well as dual-use goods and technologies

An international arrangement on import controls

A rule governing import of encryption in the United States

A rule governing export of encryption in the United States

(TCO 8) What is the Convention on Cybercrime?

A convention of black hats who trade hacking secrets

The first international treaty on crimes committed via the Internet and other computer networks

A convention of white hats who trade hacker prevention knowledge

A treaty regulating international conventions

(TCO 8) The electronic signatures in the Global and National Commerce Act _____.

Implement the principle that a signature, contract, or other record may not be denied legal effect, validity, or enforceability solely because it is electronic form

Address a myriad of legal privacy issues resulting from the increased use of computers and other technology specific to telecommunications

Make it a violation of federal law to knowingly use another’s identity

Are a major piece of legislation affecting the financial industry, and contains significant privacy provisions for individuals

(TCO 2) Give an example of a hoax and how it might actually be destructive

(TCO 2) What are the various ways a backup can be conducted and stored?

Backups should include the organization’s critical data, and…

(TCO 2) List at least five types of disasters that can damage or destroy the information of an organization

(TCO 2) List the four ways backups are conducted and stored.

Full back up, differential backup,…

(TCO 2) List at least five types of disasters that can damage or destroy the information of an organization.

Flood, chemical spill…

(TCO 2) Your boss wants you to give him some suggestions for a policy stating what the individual user responsibilities for information security should be. Create a bulleted list of those responsibilities.

Do not divulge sensitive information to individuals…

(TCO 3) What is the difference between TCP and UDP?

UDP is known as a connectionless protocol, as it has very few…

(TCO 3) List three kinds of information contained in an IP packet header

A unique identifier, distinguishing this packet from other packets…

(TCO 4) What are the laws that govern encryption and digital rights management?

Encryption technology is used to protect digital…

(TCO 5) Describe the laws that govern digital signatures

Digital signatures have the same…

(TCO 6) What are some of the security issues associated with web applications and plug-ins?

Web browsers have mechanisms to enable…

(TCO 6) What are the four common methods for connecting equipment at the physical layer?

Coaxial cable, twisted-pair…

(TCO 6) Describe the functioning of the SSL/TLS suite

SSL and TLS use a combination of symmetric and…

(TCO 6) Explain a simple way to combat boot disks

Disable them or… them in the…

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The Lorenz SZ-40/42- Teleprinter cipher machine (TUNNY). by MontImageMedia

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The SZ-40 was an electro-mechanical wheel-based cipher machine for teleprinter signals (telex). It was developed by Lorenz and used during WWII by the German Army for communication at the highest level. The machine was improved twice (SZ-42a and SZ-42b) and was broken during WWII by the codebreakers at Bletchley Park (UK) with the aid of Colossus, the first electronic digital computer. The SZ-40/42 was codenamed TUNNY by the codebreakers at Bletchley Park.

During WWII, the German Army used a variety of cipher machines, of which the Enigma machine is probably known best. For secure teleprinter communication (telex) they used the Siemens T-52 Geheimschreiber, the Lorenz SZ-40, and later the Siemens T-43 one-time pad machine.

The Lorenz SZ-40/42 was used by the German Army High Command (Oberst-Kommando der Wehrmacht, or OKW) for communication at the highest level, between Hitler and his Generals. The machine was called Schlüsselzusatz (SZ) which means Encryption Add-on. It was connected between a teleprinter and the line, and was suitable for both online and offline use.

Only a small number of SZ-40 and SZ-42 units were ever built. The image above shows one of the very few machines that have survived. It was found in Germany and is now on public display in the museum at Bletchley Park.

Please note that the Lorenz SZ-40/42 is often mistakenly called Geheimschreiber, for example in the 2012 BBC Documentary The Lost Heroes of Bletchley Park. The name Geheimschreiber was used for the Siemens T-52 and not for the SZ-42. Although the two machines use a similar principle, they are not identical and should not be confused. The T-52 was mostly used on landlines (telex) rather than via radio, making interception far more difficult. Nevertheless it was broken occasionally by Bletchley Park and, on a larger scale, by Swedish codebreakers.

Abwehr Enigma – G312 by Bri_J

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WWII Code Machine, German Secret Service (Abwehr). Bletchley Park Museum, Milton Keynes, Buckinghamshire, UK,

Encryption failure by Jukka Mannermaa

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◥CYBER Fair 2024◣ by Kimi Sumii

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iPhone 5S by Kārlis Dambrāns

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Star Trek, First Contact. Screen Captures by Morbius19

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