computer cyber security question

Chapter 7

1 Write about a half page, single-spaced, response (no more than 400 words long), discussing this case below, with particular attention to the questions below the scenario. This problem is worth 50% of the value of this assignment, or a max of 15 points out of 30.

Scoring rubric for this question: Spelling and Grammar errors (one obvious spelling error may be a typo, two of the same is an error), 2 pts out of the 15. Content, 13 pts out of the 15

Formatting: again, single-spaced; separate paragraphs by 12 pts (= to double space); no first-line indent on paragraphs (even if you like to do that, don’t); fully justify your paragraphs (see the case itself below for an example of full justification).

The case:

David Johnson is a network administrator for Network Techs. David has been passed over for promotion three times. He is quite vocal in his dissatisfaction with the situation. In fact, he begins to express negative opinions about the operation in general. Eventually, David quits and begins his own consulting business. Six months after David’s departure, it is discovered that a good deal of the Network Tech’s research has suddenly been duplicated by a competitor. Executives at Network Techs suspect that David has done some consulting work for this competitor and may have passed on sensitive data. However, in the interim since he left, his computer has been formatted and reassigned to another person. Network Techs has no evidence that David did anything wrong.

What steps might have been taken to detect David’s alleged industrial espionage? What steps might have been taken to prevent such an offense?

Write your answer below this line.

Chapter 8

2 Using multiple ciphers to encrypt a message. Here you will take a message, given a key, use the Vigenère Square to encrypt it, and then given the Caesar cipher and a specific shift, encrypt it again. You must show the Vigenère result and the final Caesar result. Each result is worth 7.5 points.

Case sensitivity is not important. In addition, you will receive, via Folio e-mail, a specific encrypted message for you , along with your key, and your specific Caesar shift .

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8 point extra credit

Given a public key of (n=33, e=3) encrypt the first three letters of your first name, using the method that we used in class. Then apply the md-5 hashing algorithm to that. Report both your encrypted first three letters, and your md-5 result. NOTE: the math of the encryption of each letter MUST contain a leading zero to three digits. For example, a result of 38 must be recorded as 038. While you cannot “show the math” for the hashing algorithm, you can show it for the encryption. So you MUST show it. As an example, you might be hashing an encrypted value that could look like 038141042 (no, I don’t know if that is a “real answer,” but it would be formatted that way, in three-digit answers, with leading zeros , and no spaces ) Enter your answers in the table below.

The encryption is worth 6 points (2 per letter), the md-5 hash is worth 2 points.

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