Integrity
Task 1
Integrity refers to safeguarding the accuracy and completeness of stored data. Data lacks integrity when it has been changed accidentally or tampered with. Examples of data losing integrity are where information is duplicated in a relational database and only one copy is updated or where data entries have been maliciously altered
Read the articles in the link below and answer questions following
1. http://edition.cnn.com/2009/TECH/11/10/facebook.groups.hacked/index.html
2. http://www.informationweek.com/news/security/attacks/231601110
3. http://www.pcgamer.com/2011/05/02/sony-online-entertainment-databases-were-hacked-players-credit-card-and-bank-information-stolen/
Answering social impacts and ethical issues
a) Who are the stakeholders in each of the above article?
b) What is the impact on human life in each case?
c) Who is responsible for the problem in each case
d) Suggest some solutions to each case
Reliability refers to the ability of hardware or information systems to function without failure.
a) Give examples of situations where you computer has been unreliable.
b) Why are computers more unreliable?
c) How do we make hardware and IT system reliable?
Read the article in the link below an answer the questions following in your note book;
http://www.kellyhs.org/itgs/ethics/reliability/THERAC-25.htm
c) Why was the software controlled machine more dangerous that the previously mechanical Therac?
d) Why would they choose to use software instead of mechanical devices when building the new Therac?
e) What changes in the development of the machine could have prevented the failures?
Research Activity
Research for any IT hardware or IT system that proved unreliable in any of the listed ITGS applications to specific scenarios
