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Example : UCSF Medical CenterIn the year 2002, the University of California, San Francisco (UCSF) Medical Center received an email message from someone who claimed to be a doctor working in Pakistan and who threatened to release patient records onto the internet unless money owing to her was paid. Many confidential medical transcripts were attached to the email.UCSF staff was confused; they had no dealings in Pakistan and surely did not employ the person who sent email. The Medical Center began an immediate investigation, concentrating on the transcription service that had been outsourced to Transcription Stat, based in close Sausalito. It transpired that Transcription Stat farmed out work to some 15 subcontractors scattered across America. One of the subcontractors was Florida based Sonya Newburn, who in turn employed subcontractors further, including Tom Spires of Texas. No one at Transcription Stat realized that Spires also employed his own subcontractors, including sender of email. The sender claimed that Spires owed her money, and had not paid her.Newburn eventually agreed to pay the $500 that the email sender claimed was owed to her. In return sender informed UCSF that she had no intention of publicizing personal information and had damaged any records in her care. Certainly, there is no way to prove that the records have been destroyed actually.Naturally, you won’t wish your own medical records to be publicized: they should be scarce. This threat cost the organization little in money terms, but how much in the reputation? Just what is the worth of reputation? Or we can say that how much is it worth paying in information security to protect the reputation?
Routers They transfer packets among multiple interconnected network machines (i.e. LANs of different kind). They perform in the data link, physical and network layers. They ha
Cipher Methods There are 2 methods of encrypting plaintext: • Bit stream method – every bit in the plaintext bit is transformed into a cipher bit one bit at a time. • Block cip
QUESTION: (a) Explain, with the aid of a diagram, a Star topology of a network of your choice. (b) Illustrate on the use of a MAN and give an example of one. (c) Describe
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CARRIER SENSE MULTIPLE ACCESS (CSMA) There is no central access management when computers transfer on Ethernet. For this solution the Ethernet employs CSMA to coordinate tran
POINT-TO-POINT: In Point-to-Point topology there are two kind of topologies. 1) STAR topology 2) TREE topology In star topology each and every computer is connect
The objective of this example is to demonstrate the steps required for a successful attack against a vulnerable Windows XP SP2 system. It will show: a) how Nessus can be used to di
A Certificate presents an organization in an official digital form. This is same to an electronic identity card which serves the purpose of Identifying the owner of the certificate
a. PKI and PGP are two methods for generating and managing public keys for use in protocols such as secure email. Compare and contrast the trust models for public keys used in PKI
PROCESSING AN INCOMING ARP MESSAGE When an ARP message reaches, the protocol specifies that the receiver must operate two basic steps. First the receiver finds the sender's add
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