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Can you suggest design changes to the underlying accessĬontrol mechanism and the user interface that would help users better Visit the Facebook Privacy Settings page and perform a heuristicĮvaluation. Facebook has been widelyĬriticized for the complexity of its privacy settings interface (e.g., Help to protect users from these type of attacks?ī)The Facebook Privacy Settings are an example of theĭifficulties in designing access control policies that users can How do users mental models protect them from, or make themĪs a security designer, what techniques can you suggest that would How do attackers exploit users motivations and understanding? What mental models of Web security do users have, and how does thisĬompare to the reality of how the Web works?.Techniques attackers use to fool users (examples of fraudulent sitesĬan be found at Write a few paragraphs thatĭescribe your findings and address the following: Next, find some examples ofįraudulent phishing or malware distribution websites to understand the Is protected? E.g., notice if there are there any procedures theyįollow, or indicators they look for. Know they are at the correct site and that any information they submit Security, and if so, how do they know they are secure? How do they Choose a few websites, and ask another person (who is notĪn expert user) to visit these sites and to talk out loud about how
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Security on the Internet and introduces the method of the "talk-aloud"
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Since you are not designing the system and building, your DFD will be based on one plausible design of the system you choose.Ī)This assignment explores users' mental models of Identify potential vulnerabilities from both technical and human perspectives and suggest safeguards based on as much information you can gather about the system through, of course, legal means draw threat trees and mitigated threat trees. You should do this assignment with your project partner. Perform threat analysis on an application you like (such as facebook, webCT, or Zimbra). Use some other security interface such as login screens or (Note: if your focus is not cryptography, you may Documentation of Cognitive walkthrough and heuristic evaluation.Have another student perform cognitive walkthrough and heurtic evaluation of your interface.Submit your design as a powerpoint or image file. Please read the paper Why Johnny Can't Encrypt to know about Usability problems of PGP.ĭesign a better interface as per the suggestions in the paper. Perform congnitive walkthrough and heuristic evaluation on PGP interface.Terms such as public key, certificate, cryptography. Ask an "everyday" user to find out his/her understanding on.How easy it is to use for someone to send and receive encrypted emails using PGP?
#Xor Encrypt Decrypt Php software#
Use the PGP software (installed in Stipes 309) to generate keys. PGP may also be used to sign and verify documents. Pretty Good Privacy (PGP) is a tool for performing Encryption and Decryption. RSA or Java Cryptographic Extension (JCE) based on the focus of your course. The program may be easily modified to implement
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(Note: We provided a sample program (XOR.java) with methods to covert String (Write a paragraph on what you did and how this exercise improved your program design.) Ask your friend or family member (without CS background) to try the program and give you feedback.
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